Physics Question

timer Asked: Mar 25th, 2016

Question description

A merry go. round of mass 20kg is freely rotating with an angular velocity of = 3 rad/s. Someone drops a sack of coal of mass 20 kg on the edge  of it. What does the angular velocity change to? ___rad/s. Remember that the rotational inertia of a disk (which is what we take the merry-go-round to be), is 0.5 mR2  

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