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help 2 Two flies land on a spinning record. One fly, A, lands at the edge of the

ID: 3307595 • Letter: H

Question

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2 Two flies land on a spinning record. One fly, A, lands at the edge of the record at distance, t. The second ty, B, lands on a spot that is at r. What is the relative speed of By B comparedvo ily A a Fly B moves at the same speed as fly A. Fly B moves at a speed that is the speed of fly A. c. Fly B moves at a speed that is ¼ the speed of fly A. d. Fly B moves at a speed that is twice the speed of fly A. e. Fly B moves at a speed that is four times the speed of fly A. Ridr) a rider finds herself pressed with her bac

Explanation / Answer

Here ,

as the angular speed of the disk is w

speed of the flies after landing on the record

v = r * w

speed of fly A = r * w

speed of fly B = r/2 * w

hence , the correct option is b

b) fly B moves at a speed that of 1/2 of speed of A