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In the figure, what will be the sign of ...

In the figure, what will be the sign of the velocity of the point `P_1`, which is the projection of the velocity of the reference particle P. P is moving in a circle of radius R in anti-clockwise direction.
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Text Solution

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As the particle on reference circle moves in anti-clockwise direction. The projection on x-axis will come from `P_1` to O towards left. Means from right to left, hence sign is negative.
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