An old fashion record is spinning freely

Reference no: EM13547378

An old fashion record is spinning freely at 78 rpm (revolutions per minute) when another record is dropped (lightly) vertically on it. Now there are two records turning together at 39 rpm, because a. rotational energy is conserved b. vertical motion is uncoupled to planar motion c. Kepler’s 2nd law d. angular momentum is conserved e. none of these

Reference no: EM13547378

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An old fashion record is spinning freely : An old fashion record is spinning freely at 78 rpm (revolutions per minute) when another record is dropped (lightly) vertically on it. Now there are two records turning together at 39 rpm, because a. rotational energy is conserved b. vertical motion ..

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