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Original Question
how much force does someone have to use to hang on to a spinning merry go round if it triples its speed (while everything else...Question
how much force does someone have to use to hang on to a spinning merry go round if it triples its speed (while everything else remains constant)?
a) three times as much as before
b)one-ninth as much as before
c)nine times as much as before
d) one-third as much as before
e) not enough information to determine
i originally thought it'd be a, but net force is proportional to the change in velocity, so I'm not sure which answer it'd be.
a) three times as much as before
b)one-ninth as much as before
c)nine times as much as before
d) one-third as much as before
e) not enough information to determine
i originally thought it'd be a, but net force is proportional to the change in velocity, so I'm not sure which answer it'd be.
Answers
R_scott
centripetal force ... f = m v^2 / r
force is proportional to the square of the velocity
force is proportional to the square of the velocity