Ga wheel of rotational inertia 16 kg·m2 is subjected to a net torque of 24 n·m. the wheel starts at rest. after the torque has acted for 5.0 s, at what rate is work being done by the torque?

P = 180 watts

Explanation:

It is given that,

Inertia of the wheel,

Net torque acting on the wheel,

Initial speed of the wheel,

Time, t = 5 s

We know that the relation between the torque and the angular acceleration is given by :

is the angular acceleration

Using first equation of rotational kinematics as :

We know that the rate at which the work is done by the torque is called the power of any object. Its formula in rotational motion is given by :

P = 180 watts

So, the power of the wheel is 180 watts. Hence, this is the required solution.

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