int from 0..pi/2 of (997 * 9.81 (7 - 2 * cos(theta))) cos(theta) * 6 * 2 * dtheta

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.