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QUESTION
An overhead door is guided by wheels at A and B that roll in horizontal and vertical tracks. Knowing that when = 40 the velocity of wheel B is 1.
An overhead door is guided by wheels at A and B that roll in horizontal
and vertical tracks. Knowing that when θ = 40° the velocity
of wheel B is 1.5 ft/s upward, determine (a) the angular velocity of
the door, (b) the velocity of end D of the door.
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