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Physics, 19.01.2020 04:31 fionatetreault8634
Atennis ball is a hollow sphere with a thin wall. it is set rolling without slipping at 4.03 m/s on the horizontal section of a track, as shown. it rolls around the inside of a vertical circular loop 90.0 cm in diameter and finally leaves the track at a point 20.0 cm below the horizontal section. (a) find the speed of the ball at the top of the loop. demonstrate that it will not fall from the track. (b) find its speed as it leaves the track. (c) suppose that static friction between the ball and the track was negligible, so that the ball slide instead of rolling. would its speed then be higher, lower, or the same at the top of the loop
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