A 4.9-kg block is pushed 3.4 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 0 = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is 0.30, determine the following. (a) the work done by F (b) the work done by the force of gravity (c) the work done by the normal force between block and wall (d) By how much does the gravitational potential energy increase during the block's motion?

A tension force of 165 N inclined at 25.0° above the horizontal is used to pull a 39.0 kg storage crate a distance of 4.10 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface. (a) the work done by the tension force (in J)   (b) the coefficient of kinetic friction between the crate and surface

A 100 kg crate is being pushed across a horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.2. What should be the magnitude of the force, so that the net work done by it and the kinetic frictional force is zero?

A block of mass m = 2.50 kg is pushed d = 2.70 m along a frictionless horizontal table by a constant applied force of magnitude F = 18.0 directed at an angle ? = 25.0° below the horizontal (a) Determine the work done by the applied force.= J (b) Determine the work done by the normal force exerted by the table.= J (c) Determine the work done by the force of gravity.= J (d) Determine the work done by the net force on the block.= J

A 325 N force is pulling on an 85.0 kg refrigerator as it slides across a horizontal floor. The force acts at an angle of 25.0° above the horizontal surface of the floor. The coefficient of kinetic friction between the refrigerator and the floor is 0.150, and the refrigerator moves a distance of 5.50 m. Find (a) the work done by the pulling force, (b) the work done by the force of kinetic friction, (c) the net amount of work done on the refrigerator, and (d) if the refrigerator was initially at rest determine the speed of the refrigerator after the 5.50m displacement. (e) Include a force (or free-body) diagram of the situation. ]

A block of mass m = 4.00 kg is pushed a distance d = 2.50 m along a frictionless horizontal table by a constant applied force of magnitude F = 16.0 N directed at an angle θ = 28.0° below the horizontal as shown in the figure below. (a) Determine the work done on the block by the applied force. (b) Determine the work done on the block by the normal force exerted by the table. (c) Determine the work done on the block by the force of gravity. (d) Determine the work done by the net force on the block.

F A 2.3 kg block is moved at constant speed over a surface for which the coefficient of kinetic friction is 0.26. The displacement is 6 m. It is pushed by a force directed at 34 degrees below the horizontal as shown in the figure above. Find the work done on the block by: a) the force; a) friction; a) gravity.

The skateboarder in the figure is coasting down a ramp, and there are three forces acting on her: her weight W (magnitude = 669 N), a frictional force (magnitude = 162N) that opposes her motion, and a normal force FN (magnitude = 625 N). Determine the net work done (a) by the weight W, (b) by the frictional force 7, and (c) by the normal force FN when she coasts for a distance of 10.6 m. (a) Number 21.0° (a) Mi (b) Number i (c) Number i e-69.0° 8 = 180.0° Units Units Units Weight component FN e-90.0° (b)

A cart is pulled a distance D on a flat, horizontal surface by a constant force F that acts at an angle θ with the horizontal direction. The other forces on the object during this time are gravity ( Fw ), normal forces ( FN1 ) and ( FN2 ), and rolling frictions Fr1 and Fr2 , as shown below. What is the work done by each force?

A block of mass m = 2.80 kg is pushed a distance d = 5.40 m along a frictionless, horizontal table by a constant applied force of magnitude F = 16.0 N directed at an angle θ = 27.0° below the horizontal as shown in the figure below.   (a) Determine the work done on the block by the applied force. J(b) Determine the work done on the block by the normal force exerted by the table. J(c) Determine the work done on the block by the gravitational force. J(d) Determine the work done by the net force on the block. J