Homework Help: physics

Posted by Anonymous on Monday, October 26, 2009 at 2:55am.

A typical ten-pound car wheel has a moment of inertia of about 0.35 kg*m^2. The wheel rotates about the axle at a constant angular speed making 45.0 full revolutions in a time interval of 7.00 sec .
What is the rotational kinetic energy of the rotating wheel?

physics - MathMate, Monday, October 26, 2009 at 6:58am
Angular velocity, ω
= (45*2π/7) radians / sec.
Rotational kinetic energy
= (1/2)Iω²
= (1/2)0.35(45*2π/7)² J.
= ?

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