Hi guys and gals, I have a robotics related engineering problem I need help with.(adsbygoogle = window.adsbygoogle || []).push({});

So, for our robot we are building, it has a centripetal arm that launches a foam basketball. The arm is 2 foot in diameter rotating from the center with 3 pounds on each side (including projectile and counterweight). It is also shooting up to 60 feet away and 6 foot high. So that comes out to needing 468 RPM with 19 ft/sec acceleration, 15 N force, a required torque of 684 oz-in with 10 spin up rotations that releases after 2.5 seconds.

So basically the centripetal force is 232.449 N and the centripetal acceleration is 732.089 M/s^2.

So for our claw design, it's three different welded chain links to form fit the ball with a urethane fingertip to add friction between the urethane ball. But how can we calculate the required torque of the three servos (one on each chain piece) that's needed to hold the ball in place against the centripetal force? It also needs to be able to release fast enough. Is the centripetal force too much for any servo? or what? We're very confused. Please help :(

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# Centripetal Force v. Torque

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