Question

Give an example of a case when the resultant force is zero but resultant torque is not zero?

Answer 1

when we push our door then due to torque door moves
here force is not zero

Answer 2

An example of a case when the resultant force is zero but resultant torque is not zero

• The force that results from a body spinning on its axis of rotation will be zero, but the torque that results from that rotation won't be.
• One force pushes down at a rod's right tip and another of equal strength pushes up at its left tip, causing a net torque but zero net force. The rod is free to spin about an axis that passes through its centre.
• A consequent force, also known as a resultant force-torque, is characterised by having the same impact on a rigid body as the initial system of forces. The net force on the car as a result is zero. A runner moving at their full speed encounters the same air resistance as their thrust, among other examples.
• A subsequent force, often referred to as a resultant force-torque, affects a rigid body in the same way as the initial system of forces did. As a result, there is no net force acting on the car. For instance, a runner travelling at their maximum speed will have the same air resistance as their thrust.
• The resultant force is zero since all forces acting on an object add up to zero. Driving forces and retarding forces are equal.

#SPJ2