A 5.0-kg block is pushed 3.0 m up a vertical wall with con- stant speed by a constant force of magnitude Fapplied at an angle of 0 = 30° with the horizontal, as shown in Figure P5.76. If the coef- ficient of kinetic friction between block and wall is 0.30, determine the work done by (a) F, (b) the force of gravity, and (c) the normal force between block and wall. (d) By how much does the gravitational potential energy increase during the block's motion? Figure P5.76

A 5.0-kg block is pushed 3.0 m up a vertical wall with con- stant speed by a constant force of magnitude Fapplied at an angle of 0 = 30° with the horizontal, as shown in Figure P5.76. If the coef- ficient of kinetic friction between block and wall is 0.30, determine the work done by (a) F, (b) the force of gravity, and (c) the normal force between block and wall. (d) By how much does the gravitational potential energy increase during the block's motion? Figure P5.76

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A dock worker pushes am = 2.20 kg bin a distance d = 2.40 m along the floor by a constant force of magnitude F = 16.0 N directed at an angle 0 = 20.0° below the horizontal as shown in the figure. Assume the floor is frictionless. (Enter your answers in joules.) (a) Determine the work done on the bin by the applied force (the force on the bin exerted by the dock worker). (b) Determine the work done on the bin by the normal force exerted by the floor. (c) Determine the work done on the bin by the gravitational force. (d) Determine the work dong by the net force on the bin.
A man pushes an 46-N crate a distance of 62 m upward along a frictionless slope that makes an angle of 30 with the horizontal. The force he exerts is parallel to the slope. If the speed of the crate increases at a rate of 2.2 m/s, then the work done (in J) by the man is.
A 58.1-kg skateboarder starts out with a speed of 2.03 m/s. He does 108 J of work on himself by pushing with his feet against the ground. In addition, friction does -243 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 7.89 m/s. (a) Calculate the change (PEf - PE0) in the gravitational potential energy. (b) How much has the vertical height of the skater changed? Give the absolute value.
Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 85.0 kg down a 60° slope at constant speed, as shown in the figure. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by friction as the sled moves 30.0 m along the hill. Enter to 3 significant figures W fric (b) How much work is done by the rope on the sled in this distance? Hint: use Newton's second law to find the tension. Enter to 3 significant figures Wrope W. grav 60° J (c) What is the work done by the gravitational force on the sled? Enter to 3 significant figures J W₁ W J (d) What is the work done by the normal force? WN= J total (e) What is the total work done? Enter to 3 significant figures Note: When adding work done by individual forces, DO NOT ROUND THE VALUES TO FIND THE SUM. J Sense-making: If the speed of the rescue sled & the victim is constant, what do you expect the total work done on the rescue sled and the victim to be? Does your answer support…
A 7.80 g bullet is moving at 460 m/s just before it penetrates a tree trunk to a depth of 4.9 cm (ay What the magnitude of the average frletional force (In N) that is exerted on the bullet whille moving the tree trunk? Uso work considerations to o your answer. (b) Asturing the frictional force is constant, how much time elapses between the moment the bullet enters the tree trunk and the moment it moving?
A horizontal force of 150 N is used to push a 40.0-kg packing crate a distance of 6.00 m on a rough horizontal surface. If the crate moves at constant speed, find (a) the work done by the150-N force and (b) the coefficient ofkinetic friction between the crate and surface.
A horizontal force of 12 N is applied to a 4.0 kg box that slides on a horizontal surface. The box starts from rest, moves a horizontal distance of 10 meters, and obtains a velocity of 5.0 m/s. The surface has friction. (a) Calculate the frictional force. (b) Calculate the work done by friction.
: The person in the diagram pushes a lawn mower a distance d, applying a constant force of magnitude F that makes an angle 0 with the displacement, which is horizontal. A constant frictional force of magnitude f acts opposite in direction to the displacement. The only other forces on the lawn mower are gravity and the normal force. Which of the forces do zero work on the lawn mower? Check all that apply. O Friction O The applied force The normal force OGravity Submit Hint Feedback I give up! Write an expression for the work Wp done by the applied force in terms of F, d, and 0. Write an expression for the work We done by the frictional force in terms of f and d. Under what condition will the kinetic energy of the lawn mower increase? All content 2021 Expert TA, LLC
A can of beans that has mass M is launched by a springpowered device from level ground. The can is launched at an angle of a0 above the horizontal and is in the air for time T before it returns to the ground. Air resistance can be neglected. (a) How much work was done on the can by the launching device? (b) How much work is done on the can if it is launched at the same angle a0 but stays in the air twice as long? How does your result compare to the answer to part (a)?
A man pushes a m = 4.00 kg bin a distance d = 3.40 m along the floor by a constant force of magnitude F = 16.0N directed at an angle 6 = 30.0° below the horizontal as shown in the figure. Assume the floor is frictionless. (Enter your answers in joules.) m (a) Determine the work done on the bin by the applied force (the force on the bin exerted by the man). (b) Determine the work done on the bin by the normal force exerted by the floor. (c) Determine the work done on the bin by the gravitational force. (d) Determine the work done by the net force on the bin.