Question #109989

You are playing a billiard game with your friends. You noticed that 8-ball spins without rolling. What do you think is the inertia of the 8-ball in angular momentum if it weighs 1.5 lbs and its radius is 1 inch?

Expert's answer

"I=\\frac{2}{5}mr^2"

"I=\\frac{2}{5}(1.5\\cdot 0.453592)(0.0254)^2=1.8\\cdot 10^{-4}\\ kg\\cdot m^2"

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