A child of mass 5 kg is going to round a merry-go-round that makes 1 rotation in 3.14 s . The radius

Question

A child of mass 5 kg is going to round a merry-go-round that makes 1 rotation in 3.14 s . The radius of the merry-go-round is 2 m . The centrifugal force on the child will be

Professor PC Thomas Classes · Answer

$\omega = 2\pi/T = 2\pi/3.14 \approx 2$ rad/s. Force $= m\omega^2 r = 5(2^2)(2) = 40$ N.