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A 1.80 x 10-3 kg coin is on the outer-most edge of a spinning turntable, which...

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Physics

A 1.80 x 10-3 kg coin is on the outer-mostedge of a spinning turntable, which has a radius,r, of 0.250 m.

μs for the coin-turntable interface is0.690.

1) The speed at the edge of the turn table is increased untilthe coin just starts to slide.This maximum speed, vmax ,in m/s is:

2) If the period is held constant when vmax isreached and the coin is moved halfway between the center of theturntable and the turntable's outer edge, the coin will have ahigher speed and will be less stable. True or False

3) The period, T, for a coin on a turntable isthe same at the outer edge as it is at the halfway point.Similarly, as the earth spins on its axis, the period that a personexperiences in Seattle is the same as it is at the equator andrelative to the universe the period is about 23 hr 56 min and 4s(not 24 hr). True or False

4) The normal force on the above coin depends on its mass, butthe maximum speed vmax is mass independent. True orFalse

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