(a) What total force resists the motion of the car, boat, and trailer, if the car exerts a 1900-N force on the road and produces an acceleration of 0.550 m/s2? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. with the horizontal., Q:A boat moves through the water with two forces actingon it. The 140 g ball has about, A:Given - 5 - In Figure Q5.21, block 2 is moving to the right. Ch. Multiply F by the coefficient of kinetic friction between the player and the sled to get the force required to push the sled across the field. The mass of the car is 1000.0 kg. force acting over the area of contact between two surfaces in the direction opposite that of motion or motion tendency, maximum amount of friction that can be generated between two static surfaces (F = uR), constant-magnitude friction generated between two surfaces in contact during motion. 5 - What forces are acting on you right now? initial speed of ball , u = 0 m/s As a weight is lifted, the moment arm (M) through which the weight acts, and thus the resistive torque, changes with horizontal distance from the weight to the elbow, Discuss how the body's center of gravity acts as a projectile or weight vector. (a) What is the force of, A:Given - -there is a high coefficient of friction between football shoes and turf. k = distance known as the radius of gyration K = 0.30, 2. magnitude of each object's velocity is the same after impact as before, but direction changes We have step-by-step solutions for your textbooks written by Bartleby experts! How does power relate to force and velocity? How much force must he apply to the sled. The figure below represents a cart viewed from above being pulled by two children The coefficient of kinetic friction between the grass and the sled is .30. (a) Show that the minimum value of P that will move the crate is given by P=sFgsec1stan Figure P5.45 (b) Find the condition on in terms of s, for which motion of the crate is impossible for any value of P. What force does a trampoline have to apply to Jennifer, a 45.0-kg gymnast, to accelerate her straight up at 7.50m/s2 ? Start your trial now! angle of inclination of ramp, = 20o She needs to move a heavy crate of bananas ( m = 80 kg) to the, Q:Mr. Vollmayer pulls his children (21kg and 24kg) on a sled (5kg). Question: 31. A football player at practice pushes a 60 kg blocking sled across the 0.30,and 1 6-22 Paunt A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. (a) Construct free-body diagrams for each block. Question 4 Feedback A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. If the force of friction including air resistance is 250 N and the acceleration of the car is 1.80 m/s2, what is the mass of the car plus its occupants? How much force does an 80 kg astronaut exert on Ch. Discuss range of motion, speed, and muscle force in the human body with levers? 5 - The three ropes in Figure P5.1 are tied to a Ch. The scale reads 800 N. (a) What is the person's mass? A. The ramp is tilted at 20 and is frictionless. K = 0.30 2. 11. Perfectly plastic: objects deform and stick together Math Homework Questions and Correct formulas. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. -yes, because of the more weight, width doesn't matter Suppose Kevin, a 60.0-kg gymnast, climbs a rope. (90 kg)(+6 m/s) + (80 kg)(-7 m/s) = (170 kg)(v). 5 - What is the tension in the rope of Figure P5.42 Ch. A mechanical advantage of less than 1.0 is a disadvantage in the common sense of the term. Mass of sled Force? (a) What Is the acceleration of the crate? What are some examples of the law of inertia? # The units for Impulse are answer choices N/s N.s N m/s Question 3 900 seconds Q. Once they stop pushing; how far will the sled slide before coming to rest? How much force must he apply to the sled?A. horizontal., Q:3. A. Acceleration of the elevator = a= ??? (b) What is the tension in the string? First week only $4.99! 18 N B. -Base of Support: This consists of the area enclosed by the outmost edges of the body in contact with the supporting surface of surfaces. A. EDUCATION. Get 5 free video unlocks on our app with code GOMOBILE, foothall player at prartice pushes 200 pound blocking sled across the field constanr speeo Howmuch force must he apply to the sled? (d) If the elevator had no brakes and the cable supporting it were to break loose so that the elevator could fall freely, what would the spring scale read? (a) What is the acceleration of the freight car? Want better grades, but cant afford to pay for Numerade? a) What force does the earth exert on the box? Experts are tested by Chegg as specialists in their subject area. A farmer pulls the leash of a stubborn, 200 kg pig (a) If the crate doesnt move, whats the magnitude of the static friction force? Solved A football player at practice pushes a 70 kg blocking - Chegg 60 N C. 180 N D. 600 N Expert Solution Want to see the full answer? A marble is placed in a graduated cylinder, which was filled to the 20 mL mark. Friction Group Practice Problem: The coefficient of dynamic friction between the grass and a 200 kg football blocking sled is 0.20. with, A:Given: -The horizontal location of the CG: The closer the horizontal location of the CG is to the boundary of the base of support, the smaller is the force required to push it outside the base of support, thereby disrupting equilibrium. 5 - The 100 kg block in Figure P5.76 takes 6.0 s to Ch. 18 N B. 5 - The forces in Figure P5.10 are acting on a 2.0 kg Ch. a. 5 - Figure P5.49 shows the velocity graph of a 2.0 kg Ch. (a) What is the tension in the rope if he climbs at a constant speed? 60 N C. 180 N D. 600 N . H1 = H2 mass of car M = 1000 kg, Q:While digging a small hole prior to planting a tree, a homeowner encounters rocks. (a) What is the tension in the rope if he climbs at a constant speed? (b) What is the size of the force acting on it? r = radius of rotation, -When angular momentum is conserved, changes in body configuration produce a tradeoff between moment of inertia and angular velocity, with a tuck position producing greater angular velocity, Decrease it; the more closely mass is distributed to the axis of rotation, the easier it is to initiate or stop angular motion. Ability of a body to return to its original state if its disturbed 5 - Two football players are pushing a 60 kg blocking Ch. A crate of weight Fg is pushed by a force P on a horizontal floor as shown in Figure P5.45. Quantity of angular motion possessed by a body measured as the product of moment of inertia and angular velocity A football player at practice pushes a 80 kg blocking sled across the What is torque and how do we calculate it? The mass of the boat plus trailer is 700 kg. m = total body mass vertically down at the rate of 30, A:Given data : What is the magnitude of the velocity, or final speed of the car in the collision. As the spring is stretched,, Q:A 60-kg crash test dummy moving at 13.4 m/s (130 mi/h) stops during a collision over a distance The figure shows the overhead views of four situations in which forces act on a, A:Q7. *Response times may vary by subject and question complexity. TO -e = [(v2post - v1post)/(v2pre - v1pre)], Impact between a moving body and a stationary one 5 - Raindrops can fall at different speeds; some fall Ch. Mass of the airplane, \[m=9000\text{ kg}\] How much force must be produced by the biceps brachii at a perpendicular distance of 3 cm from the axis of rotation at the elbow to support a weight of 200 N at a perpendicular distance of 25 cm from the elbow? Compare the force block A, A:Given: Lloyds mirror provides one way of obtaining a double-slit interference pattern from a single source so the lig 9.39 The flywheel of a gasoline engine is required to give up 500 J of kinetic energy while its angular velocit For a solid, we also define the linear thermal expansion coefficient, a, as the fractional increase in length p Write each number in scientific notation. A constant force of magnitude F is applied to the first block as in Figure P4.68. A gymnast with mass suspends herself from the lower end of a hanging rope of Balanced OR Unbalanced If the resulting acceleration is 0. (b) What is the force in the hitch between the car and the trailer if 80% of the resisting forces are experienced by the boat and trailer? Fnet = net, Q:FRICTION (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? What is her Ch. 5 - Three objects move through the air as shown in Ch. C. A 90 kg hockey player skating with a velocity of 6 m/s collides head-on with an 80 kg player traveling at 7 m/s. Free body, Q:O Little Mike (mMike = 21.2 kg) is on a swing and is pulled back by Cathy with a force of F A football player at practice pushes a 70 kg blocking sled across the field at a constant speed. Here, m is the mass of the sled and a is the, Q:Problem 4: A crate sits on a rough surface. The coefficient of kinetic friction between the grass and the sled is 0.30. The coefficient of kinetic friction between the grass and the sled is 0.30. (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? 5 - A football player at practice pushes a 60 kg Ch. The force of friction on the sled, A:Since you have posted a question with a multiple sub parts, we will solve first three sub - parts, Q:Sledding A sled with a mass of 80.0 kg is pulled For considering the, Q:1. A 20.O-g ball hangs from the roof of a freight car by a string. vo = 13.4 m/s (130 mi/h) A1,100 kg car comes uniformly to a stop. The ramp is tilted at 20 and is frictionless. Draw a free body, Q:April works at the grocery store. A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. How much force must he apply to the sled 1 See answer Advertisement okpalawalter8 Answer: The value is Explanation: A 0.250 kg toy car moving with a speed of .860 m/s collided with a wall. 5 - A 20 kg loudspeaker is suspended 2.0 m below the Ch. a. (a) What is Two blocks, A of mass 10 kg and B of mass 30 kg, are side by side and in contact 5 - Elite quarterbacks can throw a football 70 m. To Ch. 5 - A wood block is sliding up a wood ramp. N3 5 - A fisherman has caught a very large, 5.0 kg fish Ch. A Ch. 5 - Figure P5.23 shows the velocity graph of a 75 kg Ch. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. If the two players entangle and continue traveling together as a unit following the collision, what is their combined velocity? 5 - What is the minimum downward force on the box in Ch. *The crew members are applying an impulse to the toboggan to change the toboggan's momentum from zero to a max amount. The coefficient of kinetic friction between the grass and the sled is 0.30. 4 Mass of drone = 0.30 kg YouTube to MP3 Co. phone cover for mo A 5.00105 -kg rocket is accelerating straight up. 0.68 m C.1.0 m D. 6.6 m, Two football players are pushing 60 kg blocking sled across the field at a constant speed of 1.5 m/s_ The coefficient of kinetic friction between the grass and the sled is 0.30. of an applied, A:Letthemassofblock=mVelocityofblock=ConstantAppliedforce=Fapp, Q:(I) Sketch the free-body diagram of a baseball (a) at the moment it is hit by the bat, and again (b), A:Part (a) against the sled, how large must the horizontal force e to keep the sled moving? William Moebs, Samuel J. Ling, Jeff Sanny. What is happening in this instance? Group Practice Problem: The coefficient of dynamic friction between the grass and a Determine the coefficient of kinetic friction between the player and the sled. The coefficient of static friction is s, and P is directed at angle below the horizontal. A Mass of 15.0 kg is on an incline with a coefficient of static friction of No human can push on a bat with that much force. I = moment of inertia Find an expression for the carts acceleration in Figure P5.18 in terms of the balls mass m and the angle . The elevator takes 4.0 s to brake to a stop at the first. The mass of the pig is 200 kg. When the freight car begins to move, the string makes an angle of 35.0with the vertical. 5 - The forces in Figure P5.11 are acting on a 2.0 kg Ch. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. 2 See answers Advertisement Lanuel The amount of force the football player must apply to the sled is 176.4 Newton. third class: lever positioned with the applied force between the fulcrum and the resistance (ex: shovel, bicep curl). You can specify conditions of storing and accessing cookies in your browser, A football player at practice pushes a 80 kg blocking sled across the field at a constant speed. (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations. 1. (most impacts are somewhere between), When two bodies undergo a direct collision, the difference in their velocities immediately after impact is proportional to the difference in their velocities immediately before impact; coefficient of restitution (COR) measures the elasticity of an impact 5 - MCAT-Style Passage Problems Sliding on the Ice In Physics for Scientists and Engineers, Technology Physics for Scientists and Engineers: Foundations https://www.youtube.com/watch?v=3rZR7FSSidc. Mass (m) = 1500 kg 60 N C. 180 N D. 600 N 1 See answer Advertisement JemdetNasr Answer: C. 180 N Explanation: -The more massive an object is, the greater is the force required to produce a given acceleration Its passenger has a mass of, Q:Q1/ A man of mass 75 kg ,and woman of mass 55 kg stand facing each other on B9., Q:Q1: Calculate the force necessary coetticient given that of 25 N. Q:C8. an ice rink ,both, A:Newton's third law states that every action has equal and opposite reaction acting on two different, Q:What force is needed to accelerate a sled ( mass=55kg)at 1.4 m/s2on horizontal frictionless ice, Q:A 1500 kg vehicle accelerates from rest at 2.5 m/s. air. 60 N C. 180 N D. 600 N. Ch. The total angular momentum of a given system remains constant in the absence of external torques 5 - The drag force is an important fact of life for Ch. 5 - Decide whether each of the following is true or Ch. What does the scale read now? -a mechanical advantage greater than 1.0 allows the force applied (muscle) to be less than the resistive force to produce an equal amount of torque Coefficient of kinetic friction k= 0.3 A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. They are pulled by a horizontal force with, Q:$4.. The coefficient of kinetic friction between the grass and the sled is 0.30. force acting during impact has 2 effects: We have to calculate net force acting, Q:An object has a mass of 300 kg. *Response times may vary by subject and question complexity. What is a resultant joint torque in the body? hb = height to which ball bounces 3 near a deser -potential: energy due to position A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its acceleration? P = Fv. We dont have your requested question, but here is a suggested video that might help. A 7.0-N force parallel to an incline is applied to a 1.0-kg crate. force acting on the 50 kg block shown if. The coefficient of kinetic friction between the grass and the sled is 0.30. Linear momentum: quantity of motion, measured as the product of a body's mass and its velocity. a = 1.4 m/s2 (b) What is the tension in the string? The rotary effect created by an applied force (i.e. See Answer over his shoulder at the same angle above the, Q:QUESTION 6 The coefficient of static friction between the box and the bed of the truck is 0.800. a., Q:1) An object with a force accelerates as shown in the equations: (the picture) 5 - A 2.7 g Ping-Pong ball has a diameter of 4.0 cm. Ch. The answer is independent of the velocity of the gymnastshe can be moving up or down or can be instantly stationary. 97% of Numerade students report better grades. If he exerts a, Q:A baseball accelerates forward when it is hit by the bat as shown in the image below. The traffic light hangs from the cables as shown. What does tucking do to moment of inertia in pole vault? 5 - A 75 kg skydiver can be modeled as a rectangular Ch. Final Exam - Biomechanics Flashcards | Quizlet The box is not moving. A students backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an elevator. Limbs move in the direction of the applied force - Concentric muscle action (positive work) 5 - A woman has a mass of 55.0 kg. This problem has been solved! The coefficient of the static friction is 0.3. When the human body acts as a projectile, the body's CG follows a parabolic trajectory, regardless of any changes in the configurations of the body segments while in the air. 1 W = 1 J/s A football player at practice pushes a 60 kg blocking sled - Kunduz Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, Find more solutions based on key concepts.
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