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 A  particle  moves in a circle with O as centre and AO=OB=5CM, as radius . It starts from A. Calculate :  (1) the distance covered ; and the displacement , when it reaches B

Asked by wanidrjaveed 10th March 2017, 12:17 PM
Answered by Expert
Distance is the total length covered between A and B that is length of minor arc AB subtended by central angle straight theta =radius cross times straight theta=5straight theta.
Displacement is the change in the final position from the original position, 
this in our case it would be length of the chord AB = 2ropen parentheses Sinθ over 2 close parentheses=10open parentheses Sinθ over 2 close parentheses
Answered by Expert 10th March 2017, 7:08 PM
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