What is the magnitude of the couple which acts on a rotating circular disc of radius 2m, if a constant tangential force of 2N is responsible for the rotatio...

What is the magnitude of the couple which acts on a rotating circular disc of radius 2m, if a constant tangential force of 2N is responsible for the rotation.

Answer Details

The magnitude of the couple (torque) that acts on a rotating circular disc can be calculated using the equation:
τ = Fr
where τ is the torque, F is the force, and r is the radius.
In this case, the force is 2 N and the radius is 2 m, so the torque is:
τ = F * r = 2 N * 2 m = 4 Nm.
So, the magnitude of the couple that acts on the rotating circular disc is 4 Nm.