Torque MCQ Practice_1

Two equal and opposite forces are applied tangentially to a uniform disc of mass M and radius R as shown in the figure below. If the disc is pivoted at its center and free to rotate in its plane, the angular acceleration of the disc is The moment of inertia of a wheel of radius 20 cm is 40 kg∙m2. If a tangential force of F = 80 N is applied on the wheel, initially at rest, then its rotational kinetic energy K after 4 s will be A wheel with rotational inertia 0.04 kg∙m2 and radius 0.02 m is turning at the rate of 10 revolutions per second when a frictional torque is applied to stop it. How much work is done by the torque in stopping the wheel? The instantaneous angular position of a point on a rotating wheel is given by the equation 𝜃(𝑡)=2𝑡^3−6𝑡^2. The torque on the wheel becomes zero at A wheel having moment of inertia 2 kg∙m2 about its vertical axis, rotates at the rate of 60 rpm about this axis. The torque which can stop the wheel’s rotation in one minute would be