slaveclock72's profile
Location: Rāghistān, Sar-e Pol, Mexico
Member: August 23, 2022
Listings: 0
Last active: August 23, 2022
Description: I think that's a good assumption for back-of-the-envelope math. Where I think the worse assumption is that the ball isn't deformed by the rollers without slip. You can see that the picture is misleading. Soccer balls don't have rigid spheres. This is the problem. If an approximate solution is required, it looks fine. Another way to test your work is measuring how much the ball deforms in the rollers. This determines the Newtonian Friction and how much force and acceleration is imparted to it. I'm a big proponent of if possible do the problem more than one way and see if the answer jive, if they do you're good. Edit: You can see that your torque is higher than you think. The spool speed was taken from zero and not the speed at which the ball absorbs energy. Teamextreme Not a bad typo just gives you alot more margin of error.
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