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The diameter of any sphere can be calculated by multiplying it's diameter by Pi. For a 40mm diameter Ping Pong Ball, this comes to ~ 125.6 mm. For a 38mm diameter Ping Pong Ball, this comes to ~ 119.32 mm.
The diameter of a ping pong ball is 40mm. I do not know the circumference. Before the ball was changed a few years ago to 40mm, it was 38mm. The larger ball travels more slowly and with less spin. This was done to make Table Tennis easier to watch on television, and therefore make the sport more popular. On TV, TT can appear too fast to appreciate, and by enlarging the ball it was hoped that the game would slow. The game has, in fact, slowed, but this has not accomplished the goal of popularizing the sport. Many players would love to see the ball returned to 38mm, as at this size the ball traveled more quickly and more spin was possible, making the ball's travel more manageable.
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Average speed of ping-pong ball?
What is the average speed of a ping pong ball in the olympics?
How heavy is a ping pong ball in grams?
A ping pong ball is usually 2.7 grams.
Is the gas inside a ping pong ball poisonous?
No ... the inside of a ping pong ball is filled with air. Click on the 'Inside of a Ping Pong Ball' link below to learn more.
What did they originally use to hit the ball with in ping pong?
Books were used as paddles to hit the ball in Ping Pong with the game originated in the 1880's.
Why do ping pong balls float?
If they float in water, then it is because the density of a ping pong ball is lighter than the density of water. The density of water is just below 1, and the density of a ping pong ball is much less than 1.
