Question

You are pushing a 500 kg refrigerator across the kitchen floor and you are overcoming a 15 N kinetic friction force. H0w much force is need to move it at a constant velocity. Draw the force diagram.

Answer 1

constant velocity means the velocity's rate of change is 0, which means it's derivative is 0, which means acceleration is 0, therefore net force is 0. So if you have a counter force of 15N, the push force must also be 15N.

Answer 2

okay thank you so much!!! this helps alot

Answer 3

what would the force diagram look like though??