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Here I solve it, please correct

Kinetic Energy = (1/2)mv

^{2}

calculating velocity at 1 rpm, and radius = 6cm

so for circumfrance of circle = 2*pi*r

v = 2 * 3.14 * 6cm = 37.69 cm = 0.3769 meters/second

K.E = 0.5 * 0.20 * 0.37

^{2}meters

= 0.0136 Joules <=== Is this correct ?

Any help will be appreciated.

Thanks