For the configuration shown, the angular velocity of link

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For the configuration shown, the angular velocity of link AB is 10 rad/s counter clockwise. The magnitude of the relative sliding velocity (in ms^–1) of slider B with respect to rigid link CD is

1. 0
2. 0.86
3. 1.25
4. 2.50

Correct Option: D

Given: ω_AB = 10 rad/sec (CCW)
AB = 250 mm, BC = 250 √3, AC = 500
Direction of velocity of AB is perpendicular to link AB and direction of velocity of AB is parallel to line CD.
Also, direction of relative velocity of slides B with respect to C is in line with link BC.
∴ V_C = 0
But V_B = r_AB × W_AB = 250 × 10 × 10^{– 3} = 2.5 m/sec
V_BC = V_B – V_C = 2.5 m/sec