A roller coster has a loop with 7.62 diameter. a) What is the minimum height above the bottom of the loop required to acheive enough speed so that the coaster does not loose contact with the track? b) How many g's does the passenger expirience at the top of the loop AND at the bottom of the loop upon entering the loop.? c) suppose the coaster came to rest at 3/4 h on the other side of the loop. What fraction of the energy was lost?

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