A regulation table tennis ball is a thin spherical shell

Chris Cruz 2021-12-13 Answered
A regulation table tennis ball is a thin spherical shell 40 mm in diameter with a mass of 2.7 g. What is its moment of inertia about an axis that passes through its center?
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Expert Answer

kalfswors0m
Answered 2021-12-14 Author has 24 answers
The moment of inertia of the ball you can find using equality:
I=23mr2
I is the inertia of the tennis ball, m is the mass of the ball, r is a rafius of the ball.
d=40mm, m=2.7g
Solving for the radius:
r=12d=12×40×103m=0.02m
m=2.7g×103kg=0.0027kg
Substitute the values to the formula:
I=23×0.0027kg×(0.02m)2=7.2×107kg×m2

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xandir307dc
Answered 2021-12-15 Author has 35 answers
Good job, thanks!

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