Arrow Home
Arrow Site Map
Arrow Search
Arrow New User
Arrow Contact Us
Arrow Gallery
BACK to Gallery of Problems English Version French Version Submit Problem


ping pong

Ping pong strategy

A table tennis ball has a diameter of 38 mm and a weight of 0.0245 N. A player hits the ball horizontally at a speed of 10 m/s. Obviously, if the player puts no spin on the ball, it will have a trajectory curved downwards, due to gravity. Compute the amount of backspin (angular velocity) that the player must give to the ball so that it will move horizontally. Is this value realistically possible? Also compute the drag on the ball.


Contributed by Stavros Tavoularis, Department of Mechanical Engineering, University of Ottawa, Ottawa, Canada.

The copyright on these problems is held by the contributors. Permission must be sought before using them in any way.