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what will be approximate change in velocity by the tip of seconds hand of wall clock in 10s if length of the hand is 10cm
v = wr [ where w is angular velocity and r is length of second hand]and w = 2/T [ where T is time period of second hand which is 60 mins so there forw =/30so v =/30 × 10/100 = /300 m/snow v =v2 + v2 _2v2cos60 = /300 m/s
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