104in rotational kinetic energy is equals to 1 by 2 I w2 that is equals to 2 by 2 I what does w represent ​

I is the moment of inertia which is a scalar

w is the angular velocity

Explanation:

Kinetic energy has the Formula

           K = ½ m v²

if the system is rotating, the linear velocity is related to the angular velocity

          v = wr

we substitute

         K = ½ m w² r²

         K = ½ (m r²)  w²

If we consider the body as punctual

         I = m r²

we substitute

       K = ½ I w²

we can see that

I is the moment of inertia which is a scalar

w is the angular velocity

K is called the rotational kinetic energy

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

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