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  3. a 1.0 kg ball and a 2.0 kg ball are connected by a

A 1.0 kg ball and a 2.0 kg ball are connected by a 1.0-m-long rigid, massless...

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Physics

A 1.0 kg ball and a 2.0 kg ball are connected by a 1.0-m-longrigid, massless rod. The rod is rotating cw about its center ofmass at 19rpm .

What torque will bring the balls to a halt in 5.0s ?

Express your answer to two significant figures and include theappropriate units.

Answer & Explanation Solved by verified expert
4.0 Ratings (605 Votes)
First you need to find the center of mass To do this use the equation MR m1r1 m2r2 Lets just say that baseball 1 is at a position r 0 then baseball 2 would be at r 1m So MR 1kg 0m 2kg 1m MR 2 kgm Then to find the position of the center of mass simply divide by the total mass M which is 1kg 2kg 3kg R 2kgm 3kg R 23 m    See Answer
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