A factory worker pushes a 30-kg crate a distance of 4.5 m at a downward angle of 30° below the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. 0 = 30° Fpush
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Questions:
(a) If the crate moves at constant speed, what is the work done by the worker on the crate?
(b) What is the work done by kinetic friction?
(c) Find the total work done on the crate
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- The final answer is really importantStarting from rest, a 4.2-kg block slides 2.20 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is µk = 0.436. (a) Determine the work done by the force of gravity. (b) Determine the work done by the friction force between block and incline. (c) Determine the work done by the normal force.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
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