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# a bead slides without friction around a loop-the-loop. a) if the bead is released from a...

a bead slides without friction around a loop-the-loop. a) if the bead is released from a height h=3.5 R, what is its speed at point A is R=30 cm? b) how large is the normal force on it if its mass is 5 g? c) from what minimum height, in terms of R, must the bead be released so that it stays in contact with the loop when it goes around?

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