A grocery cart with a mass of 21kg is pushed at constant speed along an aisle by

Question

A grocery cart with a mass of 21kg is pushed at constant speed along an aisle by a force F= 12 N. The applied force acts at a 20° angle to thehorizontal. Find the work done by each of the forces on the cart ifthe aisle is 14 m long. what is the: work done by the applied force work done by the frictional force
work done by the normal force work done by the gravitational force A grocery cart with a mass of 21kg is pushed at constant speed along an aisle by a force F= 12 N. The applied force acts at a 20° angle to thehorizontal. Find the work done by each of the forces on the cart ifthe aisle is 14 m long. what is the: work done by the applied force work done by the frictional force
work done by the normal force work done by the gravitational force

Explanation / Answer

W=Fcos20*14 J As it is moving with constant velocity the applied force alonghorizontal=frictional force W=fr*14=Fcos20*14 J Work done by normal force is W=0 Work done by gravitational force is W=0 Hence we get by it. Work done by gravitational force is W=0 Hence we get by it.

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