Question

A body of mass m is acted upon by a force f and the acceleration produced is a if three coplanar forces are each equal to f and inclined to each other at 120 act on the same body and no other forces are acting the acceleration produced will be

Answer 1

Answer:

The acceleration will be zero.

Explanation:

There are 4 forces in total acting on the ball. When we resolve the force inclined at an angle into component, the final resultant is zero. This is because the forces have the same magnitude but different directions. According to Newton’s second law of motion, if the body is not subjected to any external force, the object at rest will continue to be motionless.

However a moving body will move at a constant velocity. This is due to the fact that acceleration is a subject of force and mass. Therefore zero force means zero acceleration.