160 30 The masses of the smooth blocks and B are 50 kg and 35 kg, respectively. Draw the free body diagrams of a. block A block B b. c. blocks A and B.
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Draw the FBD of block A, block B, and blocks A and B
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- The homogeneous plate of weight W is supported by a ball-and-socket joint at D and three wires. Draw the FBD of the plate and count the unknowns.Draw the FBD for the bar described in Prob. 5.1 if the bar is homogeneous of mass 50 kg. Count the unknowns.Determine the horizontal force P that would keep the uniform 12-kg rectangular plate in the position shown.
- The automobile, with center of gravity at G, is parked on an 18 slope with its brakes off. Determine the height h of the smallest curb that will prevent the automobile from rolling down the plane.The figure models the handle of the water cock described in Prob. 4.9. Draw the FBD of the handle, neglecting its weight. Count the unknowns.The homogeneous plate of weight W is suspended from two cables. Determine the force P that is necessary to keep the plate in the position shown.
- A concrete seawater dam is shown in cross section. Is the dam safe against tipping about edge A? The mass densities are 24000kg/m3 for concrete and 1030kg/m3 for seawater.The 80-kg crate has its center of gravity at G. Determine the smallest force P that will initiate motion if =35.The tongs shown are designed for lifting blocks of ice. If the weight of the ice block is W, find the horizontal force between the tongs and the ice block at C and D. Neglect the weights of the tongs.
- Determine the smallest horizontal force P that would push the homogeneous cylinder of weight W over the curb. Neglect friction.The homogeneous 240-lb bar is supported by a rough horizontal surface at A, a smooth vertical surface at B, and the cable BC. Draw the FBD of the bar and count the unknowns.The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016, determine the force F required to advance the bar at a constant speed.