The angular velocity of the idler pulley is 4 rads, Ask an Expert

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A series of small machine components being moved by a conveyor belt passes over a 120-mm-radius idler pulley. At the instant shown, the angular velocity of the idler pulley is 4 rad/s clockwise. If the total acceleration of point B is 2400 mm/s2, what is the angular velocity of the idler pulley?

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