Question

Suppose a fan whose blades rotate with a speed corresponding to 900 rpm. East
when it is switched off, the fan begins to rotate with uniformly delayed movement and performs 15 turns
until it stops completely. The work of the forces (friction) that slows it down is equal to 44.4 J. Calculate:
(a) The moment of inertia of the fan.
(b) The moment of the forces (badly called torques) that slow down the fan.

Answer 1