What is the net force acting on a yo-yo when it doesn't move?

1 Answer
Dec 5, 2014

The net force acting on the yo-yo when it doesn't move is 0 N.


We can know this because Newton's first law of motion states that a body at rest remains at rest and a body in motion remains in motion at constant velocity, unless acted upon by an unbalanced force. When a body is at rest or is in motion at a constant velocity, there is no acceleration. The acceleration is 0.

We get the formula Force = mass x acceleration #(F = ma)# from Newton's second law of motion. Since the yo-yo is at rest, its acceleration is 0, and the net force acting on it is 0. #F = m xx 0 = 0 "N"#