If a rock is tied to a string and swung vertically, why is the tension greater when the rock is at the bottom? Would the centripetal force be greater at this point?
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when the rock is at the bottom
T = mg + mv^2/r
as compare with the rock is at the top
T + mg = mv^2 /r
answer
T = mg + mv^2/r
as compare with the rock is at the top
T + mg = mv^2 /r
answer