Help with a general physics problem?
A 35.0 child runs tangential to the rim of a stationary merry-go-round. The merry-go-round has a moment of inertia of 550 and a radius of 2.40 . When the child jumps onto the merry-go-round, the entire system begins to rotate.
What initial speed does the child have if the angular speed of the system after the collision is 0.485 ?
I've been trying a lot with this and I can't seem to get it. Any help? Please?
Answers & Comments
Verified answer
MI of 550 @ 2.4 meters is same as 95.5 kg @ 2.4 m
momentum for .485 m/s = 95.5 x .485 = 46.31 kg-ms
46.31 / 35kg (child) = 1.323 m/s velocity of child
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