(7) The two pulleys are fastened together to form an integrated unit, and they are prevented from turning about the bearing support O by a cable wound securely around the smaller pulley and fastened to point A. Determine the magnitude of the reaction at the bearing when a downward force of 2 kN is applied as shown. Neglect the weight of the pulleys. Ans: O = 4.38 kN 200 mm 125 mm 325 mm 2 kN

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