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The radius of the loop-the-loop shown below is R = 8.000 m. A) From what initial...

The radius of the loop-the-loop shown below is R = 8.000 m.

A) From what initial height should the block be released from rest in order for the block to just barely make it through the loop-the-loop?

B) How fast is the block moving at the top of the loop-the-loop in the case described in part A above?

C) How do your results in parts A and B above change if you double the mass of the block?

D) Explain your answer to question C.

please clearly

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