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A bowling ball has a mass of 7.0kg, a moment of inertia of 2.8 x10-2 kg...

A bowling ball has a mass of 7.0kg, a moment of inertia of 2.8 x10-2 kg . m2 and a radius of 0.10 m. If itrolls down the lane without slipping at a linear speed of 4.0 m/s,what is its total kinetic energy?
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Answer #1
Total Kinetic energy = translation kinetic energy plus rotationalkinetic energy
TKE = .5mv^2 + .5Iω^2

v = r ω

4 = .1 ω

ω = 40 radians/sec

TKE = .5(7)4^2 + .5 (2.8*10^-2) 40^2
TKE = 56 + 22.4
TKE = 78.4 Joules
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