A crate initially at rest on a horizontal floor is pushed straight forward by a…
PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
A 2.0kg crate initially at rest on a horizontal floor is pushed straight forward by a constant horizontal force of 15N through a displacement of 4.0m.
Ignore rotational motion of the crate.
(a) Calculate the work done on the crate by the applied force during the push.
(b) Determine the speed of the crate immediately after the 4.0m push if the floor is frictionless.
(c) The same push is now performed on a floor with coefficient of kinetic friction μk=0.25. Determine the speed of the crate after the 4.0m displacement in this case.