400 N 0 Figure Q2 (b) 800 N
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A: To calculate the forces in the member AG, AB, CG, GF, CF
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Q: a=2.1m (1) c = 2m B b = 3.1m d = 1.8m P = 80 kN WHAT IS THE AXIAL STRESS IN ROD 1 ? ANSWER IN MPa…
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Q: By using the cosines law, if (a = :40.9 )the force R equals to
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Q: a=2.1m (1) c = 2m b=3.1m d = 1.8m P = 30 kN WHAT IS THE AXIAL STRESS IN ROD 1 ? ANSWER IN MPa…
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- 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.Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair is denoted by G. The coefficient of static friction is 0.2 at B (the contact point between the chairs) and 0.35 at A, C, and D. Determine the smallest force P that would cause sliding.The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the smallest force P and the corresponding angle that would cause impending sliding of the block. The angle of static friction between the block and the ground is s.
- The coeffient of static friction between the uniform bar AB of weight W and the ground is 0.45. Find the smallest angle and the corresponding force P that would initiate simultaneous tipping and sliding of the bar.Draw the FBD of the entire frame, assuming that friction and the weights of the members are negligible. How many unknowns appear on this FBD?The uniform ladder of weight W is raised slowly by applying a vertical force P to the rope at A. Show that P is independent of the angle .
- Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center of gravity of the mower is at G, and the coefficients of rolling resistance are 0.12 for the front wheels and 0.18 for the rear wheels.The bar ABC is supported by three identical, ideal springs. Note that the springs are always vertical because the collars to which they are attached are free to slide on the horizontal rail. Find the angle at equilibrium if W = kL. Neglect the weight of the bar.The cone clutch transmits the torque C through a conical friction surface with cone angle . The inner and outer radii of the friction surface are a and b, respectively. The left half of the clutch is keyed to the shaft, and the right half drives a machine (not shown) through a gear attached to its outer rim. Assuming uniform pressure on the friction surface, show that the maximum torque that can be transmitted by the clutch is
- In Sample Problem 5.4, determine the tension TAC using the equation MDB=0.Two block A and B are connected by a rope which wraps areound a peg with static coefficient of friction of 0.2. The block B weight 50-lb and is subjected to a 35-Ib force as shown. The static coefficient of friction for the contact surface between the block and the gound is 0.4. Find the range of weight of block B for no motion( Hint: no motions no sliding and no tipping).Two blocks A and B weighing 3 kN and 15 kN, respectively, are held in position against an inclined plane by applying a horizontal force P as shown in Fig. Find the least value of P which will induce motion of the block A upwards. Angle of friction for all contact surfaces is 12°.7.