Question

In a garden nursery a large box of flower seeds (mass 18kg) is pushed 1.6m along a horizontal floor by a woman who is exerting a force of 1.5E2 N at 22^o below the horizontal. The coefficient of kinetic friction between the box and the floor is 0.55.

a) Use Newton's laws of motion to determine the magnitudes of the normal force and friction force on the box.

b) use conservation of energy to determine the final speed of the box if it starts from rest.

c) How much thermal energy is produced?

Answer 1

***************************************************************************************************
Check the answer and let me know immediately if you find something wrong... I will rectify the mistakes asap if any