PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A 6.0kg wooden crate rests on a level warehouse floor. The coefficient of kinetic friction between the crate and the floor is 0.25. A worker pulls the crate with a constant horizontal force of 40N. Assume the crate starts from rest.
(a) Draw a clearly labeled free-body diagram for the crate while it is being pulled.
(b) Calculate the magnitude of the kinetic friction force acting on the crate.
(c) Determine the magnitude of the net horizontal force acting on the crate.
(d) Calculate the magnitude of the crate’s acceleration.
(e) Determine the distance the crate travels in the first 3.0s. Express your answer with appropriate units.