Ratio of angular speed of minute and hour hand
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1) The ratio of the angular speeds of the hour hand and the minute hand of a clock is
{answer should come 1:12}2) Two particles A and B move in concentric circles of radii respectively in such a way that A, B and the centre of the circle (O) always lie on a straight line. The ratio of their angular velocities is{answer should come one}3) The angular speed of a flywheel rotating at 90 r.p.m. is{answer should come 3 rad/s}4) A flywheel of diameter 1 m is rotation at 600 r.p.m. The acceleration of a point on the rim of the fly wheel is{answer should come 200 }