Open Question: A regulation table tennis ball has a mass of 2.5g and is 40mm in diameter.?
Jul/100
What is its moment of inertia about an axis that passes through its center?
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Open Question: A regulation table tennis ball has a mass of 2.7g and is 38mm in diameter. What is its moment of inertia about?
Jun/100
an axis that passes through its center?
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Open Question: Ping-Pong Ball Hit Out and Over the Table?
Jun/100
Imagine this scenario:
Player A and Player B are playing a game of ping-pong/table tennis.
Player A returns the ball very fast but too hardly and and it flies out of bounds (very obvious that is is going out of bounds)
Player B not having time to react, can not move his paddle/paddle hand out of the path of the ping pong ball, and the ball ends up striking his/her paddle and fell onto the ground.
Whose point would that have been?
I’m well aware that the rules have changed a good bit over the years and the official rules don’t state specifically what would happen in this situation (It says that Player B receives the point if the ball strikes him/her without bouncing on his/her side of the table first, but says nothing about the paddle). I want to know the latest update of the rules concerning this rule.
**EDIT:
Player B strikes the ball behind the playing table and the ball merely bounces off and goes a short distance (not far and passing over the table)
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Open Question: Derive the Algebraic expression for the velocity of the bowling ball after the collision?
Jun/100
Suppose that a bowling ball with a mass M traveling with speed V collides elastically with a stationary table tennis with mass m.
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What is the world record for the number of timesa ping pong ball is bounced on a paddle?
Jun/101

I need to know how many ping pong ball bounced off times is a paletacualquier help, especially the people of Guinness. iwant to break it. . .