A laboratory cart of mass slides across a level track while a student pushes it…
PHYSICS · Multi-part · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
A laboratory cart of mass 1.5kg slides across a level track while a student pushes it horizontally.
Coefficient of kinetic friction between the cart wheels and the track: μk=0.12
While the cart is already sliding, the student exerts a constant horizontal pushing force of 2.0N toward the right.
Assume standard Earth gravity.
(a) Calculate the magnitude of the normal force exerted on the cart by the track.
(b) Determine the magnitude of the kinetic friction force acting on the cart.
(c) Using your result from part (b), find the net horizontal force on the cart while the 2.0N push is applied.
(d) Determine the magnitude and direction of the cart’s acceleration under these conditions.