Q. A rigid rod of length 1 m is resting at an angle q = 45o as shown in the figure. The end P is dragged with a velocity of U = 5 m/s to the right. At the instant shown, the magnitude of the velocity V (in m/s) of point Q as it moves along the wall without losing contact is
(A) 5 (B) 6 (C) 8 (D) 10
Ans: 5
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