A tension force of 175 N inclined at 20.0° above the horizontalis used to pull a 40.0 - kg packing crate a distance of 6.00 m ona rough surface. If the crate moves at a constant speed, find(a) the work done by the tension force and (b) the coefficientof kinetic friction between the crate and surface.

You are biking along a country road whenyou reach the base of a bridge travelling at 5.00 m/s. At the top of the bridge you have climbed a vertical distance of 5.20 m and have slowed to 1.50 m/s. Ignore any work done by friction or any inefficiency in the bike or your legs. (a) What is the total work done on you and your bike in going from the base of the bridge to its topif the total mass of you and your bike is 80.0 kg? (b)How much work have you done with the force you apply to the pedals?

A block of mass 2.00 kg is pushed 3.00 m along a frictionless horizontal table by a constant 17.0N force directed 27.0° below the horizontal. Determine the work done by (a) applied force (b) the normal force exerted by the table (c) the force of gravity. (d) Solve the total work done on the block.

A  6.8kg block is being pushed up a frictionless plane inclined at  35o to the horizontal. (a) Calculate the work done by the normal force (b) Calculate the work done by the gravitational force as the block moves  3.6m along an axis parallel to the inclined plane.

A 5.00 kg package slides 2.80 m down a long ramp that isinclined at 24.0° below the horizontal. The coefficient of kinetic frictionbetween the package and the ramp is mk = 0.310. Calculate (a) thework done on the package by friction; (b) the work done on the packageby gravity; (c) the work done on the package by the normal force;(d) the total work done on the package. (e) If the package has a speedof 2.20 m/s at the top of the ramp, what is its speed after it has slid2.80 m down the ramp?

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) The Eskimo a 50.0-kg sled over level ground with a force of 1.80  102 N exerted horizontally, moving it a distance of 6.30 m over new terrain. If the net work done on the sled is 1.90  102 J find the coefficient of kinetic friction.(b) Repeat the exercise with the same data, finding the coefficient of kinetic friction, but assume the applied force is upwards at a 35.0° angle with the horizontal.

A 3.8kg box is raised from rest a distance 8.4m by an upward applied force of 7.8N. Find the work done by gravity on the box. Give the numerical value only and include sign if applicable.

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.