a body having mass 10 kg revolving around its axis of rotation 5cm with angular speed 5 per second. calculate kinetic energy of body
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Mass of body, m = 10 kg
Radius , r = 5 cm = 0.05 m
Since it is not given in the question that whether the body is ring or other.
Hence, I am assuming it a ring.
Angular speed, ω = 5 rad/sec
hence, KE = 1*I*ω^2/2
= m*r^2*ω^2/2
= 10*(0.05)^2*5^2/2 = 0.3125 J
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