The turntable in a microwave oven has a moment of inertia of 0.040 and rotates continuously, making a complete revolution every 4.0s. what is its kinetic energy

Kinetic energy is

Explanation:

Given :

Moment of inertia of turntable in a microwave oven, .

Time period of rotation , T = 4 s.

Now , we know angular frequency , .

Putting value of T in above equation.

Now, Kinetic energy of rotating object,

Putting value of I and in above equation.

We get,

Hence, this is required solution.