5-50. The machine shown is used for forming metal plates. It consists of two toggles ABC and DEF, which are operated by the hydraulic cylinder H. The toggles push the movable bar G forward, pressing the plate p into the cavity. If the force which the plate exerts on the head is P - 12 kN, determine the force Fin the hydraulic cylinder when 8 - 30. e = 30 200 mm 00 mm P= 12 kN -F 200 mm 200 mm = 30
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- 5-50. The machine shown is used for forming metal plates. It consists of two toggles ABC and DEF, which are operated by the hydraulic cylinder H. The toggles push the movable bar G forward, pressing the plate p into the cavity. If the force which the plate exerts on the head is P = 12 kN, determine the force F in the hydraulic cylinder when 0 = 30°. U D 200 mm 200 mm A 0 = 30° E -F F H B 0 = 30° F 200 mm 200 mm C Prob. 5-50 G р ▬▬▬ P = 12 kN ▬▬The 1200-lb homogeneous block is placed on rollers and pushed up the 10 incline at constant speed. Determine the force P and the roller reactions at A and B.The pumping unit is used to recover oil When the walking beam ABC is horizontal, the force acting in the wireline at the well head is Fe 250 Ib. Determine the torque M which must be exerted by the motor in order to evercome this load. The horse-head Cweighs 59 lb and has a center of gravity at Ge. The walking beam ABC has a weight of 130 Ib and a center of gravity at Gn and the counterweight has a weight of 210 Ib and a center of gravity at Gw. The pitman, AD is pin connected at its ends and has negligible weight (Eguee 1) E Redew Part A Detemine the torque M which must be exerted by the motor Express your answer to three significant figures and include the appropriate units. Figure 1 of 1 Value lb ft 68 16 Submit Previoun Answecs HenuestAnswet X Incorrect: Try Again 250 < Return to Assignment Provide Eeedback
- Determine the n- and t-components of the force F which is exerted by the rod AB on the crank OA. Evaluate your general expression for F-119 N and (a) 0-24°, B-16° and (b) 0-24°, B-29⁰ Answers: (a) F- i N, F.- i N (b) Fi N. F i NThe pumping unit is used to recover oil. When the walking beam ABC is horizontal, the forceacting in the wireline at the well head is 250 lb. Determine the torque M which must beexerted by the motor in order to overcome this load. The horse-head C weighs 60 lb andhas a center of gravity at Gc. The walking beam ABC has a weight of 130 lb and a centerof gravity at GB, and the counterweight has a weight of 200 lb and a center of gravity atGW. The pitman, AD, is pin connected at its ends and has negligible weight.Determine the n- and t-components of the force F which is exerted by the rod AB on the crank OA. Evaluate your general expression for F-101 N and (a) = 29°, -21° and (b) 0 -25°, 3 - 36° B Answers: (a) F= N (b) Fn- N i i N, F₂ i N. F i
- 3-40. The load has a mass of 15 kg and is lifted by the pulley system shown. Determine the force F in the cord as a function of the angle 0. Plot the function of force F versus the angle 0 for 0 ≤ 0 ≤ 90°.6-85. The three power lines exert the forces shown on the truss joints, which in turn are pin-connected to the poles AH and EG. Determine the force in the guy cable AI and the pin reaction at the support H. 20 ft D B -40 ft--40 ft- 800 lb 800 lb H 800 lb -50 ft-30 ft--30 20 ft -30 ft-30 ft-30 ft-30 ft 30 ft-30 20 ft ft-50 ft- 125 ftBased on Problem 5-87 from the textbook. Both pulleys are fixed to the shaft and as the shaft turns with constant angular velocity, the power of pulley A is tramsitted to pulley B. Determine the horizontal tension T in the belt on pulley B and the x, y, z components of reaciotn at the journal bearing C and thrust bearing D. The bearings are in proper alignment and exrt only force reactions on the shaft. F₁ = 70 N F2=80 N Unique Values for F 300 mm F3 = 40 N 8= 44 44° 250 mm 200 mm F₁ F2 80 mm A 150 mm B
- Determine the n- and t-components of the force F which is exerted by the rod AB on the crank OA. Evaluate your general expression for F = 90 N and (a) 0 = 29°, 3= 25° and (b) = 14°, 3 = 37° Answers: (a) Fn = (b) Fn = i i B BI A N, Ft= N, Ft= i N N5-28. The hatch door has a weight of 80 lb and cente gravity at G. If the force F applied to the handle at C coordinate direction angles of a = 60°, B = 45°, y = 60°, determine the magnitude of F needed to hold door slightly open as shown. The hinges are in pr alignment and exert only force reactions on the d Determine the components of these reactions if A ex only x and z components of force and B exerts x, y, z f components. z 4 ft ---3-72 3 ft C Prob. 5-28 B X F*5-36. A 300-kg counterweight, with center of mass at G, is mounted on the pitman crank AB of the oil-pumping unit. If a force of F - 5 KN is to be developed in the fixed cable attached to the end of the walking beam DEF, determine the torque M that must be supplied by the motor. -1.75 m -2.50 m 30 05 m 0.65 m