Q25 of 40 Page 102

In Fig. 14.9, what will be the sign of the velocity of the point P′, which is the projection of the velocity of the reference particle P. P is moving in a circle of radius R in anticlockwise direction.


As the particle P moves in anti-clockwise direction, its x-axis projection length decreases ∴ the distance OP’ decreases and this is only possible if P’ moves towards negative x-axis direction.


Hence we can say that the sign of the velocity of P’ will be negative


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