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April 23, 2014

Homework Help: Physics (Rolling)

Posted by M on Friday, March 16, 2012 at 8:45am.

In Fig. 11-35, a solid brass ball of mass m will roll smoothly along a loop-the-loop track when released from rest along the straight section. The circular loop has radius R, and the ball has radius r << R. (a) What is h if the ball is on the verge of leaving the track when it reaches the top of the loop? (b) If the ball is released at height h = 6R, what is the magnitude of the horizontal force component acting on the ball at point Q? State your answers in terms of the given variables, using g where applicable.

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