A fan with the moment of inertia of 4 kgm2 is spinning with an angular speed...

Question

Question

A fan with the moment of inertia of 4 kgm² is spinning with an angular speed of 10 rad/s.

What is its rotational kinetic energy in J

Answer 1

Answer #1

Rotational Kinetic energy is calculate by using the formula,

102 Erot =

I = Moment of inertia of fan = 4 kgm?

w = Angular speed of fan = 10 rad/s

:: Erot = - 4 x (102 - = 200) 2

Answer 2

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