Question

If the net force acting on a rigid body is zero it implies?

• A. centre of mass is moving at a constant velocity
• B. That body can't have angular acceleration
• C. bady must have linear acceleration
• D. body must have linear and angular acceleration

Answer 1

The correct option is A centre of mass is moving at a constant velocity

If the net force is zero it surely implies that centre of mass will not accelerate. As discuused in the videos, the net torque may not be zero in such a case. Thus body can have angular acceleration.