2/33 A prybar is used to remove a nail as shown. Deter- mine the moment of the 60-lb force about the point O of contact between the prybar and the small sup- port block. Ans. Mo 70.0 lb-ft CW 60 lb A -15° 14" 65° 1.2" Problem 2/33
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- Q.2 The 50-KN smooth sphere rests on the 30° inclined A and bears against the smooth vertical wall B. Calculate the contact forces at A and B.Resolve the 360-lb force into components along the cable AB and AC. Use a = 60° and B = 40°Beam has a mass of 75.0 kg. F1 = 85.0 N F2 = 150.0 N F3 = 125.0 N a) Locate the center of gravity of the beam. Determine b) the net torque on thebeam about point O; c) the required magnitude of F3 to keep the beamstationary
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