Ladder Sliding (Inst. Center)

vA = 1 ft/s

vB = ?

x

y

B

LAB = 40 ft

q

The bottom of the ladder shown is pulled to the right with a velocity of 1 ft/s.

Find the angular velocity of the ladder and the velocity of point B.

Step 1: Locate the instantaneous center.

rAC = LAB cosq

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