Pulley A delivers a steady torque of 1100 lb-in. To a pump through its shaft at C. The tension in the lower side of the belt is 165 lb. The driving motor weighs 200 lb and rotates clockwise. Determine the bearing reaction force at O.
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- is part of a drive 6-101 The shaft shown in Fig. system in a factory. Friction between the belts and pulleys prevents slipping of the belts. Determine the torque T re- quired for equilibrium and the reactions at supports A and B. The support at A is a journal bearing, and the support at B is a thrust bearing. The bearings exert only force reac- tions on the shaft. 6 in. 50 lb 200 lb 150 lb 6 in. 50 lb B 8 in. 14 in. 14 in.The round stepped shaft (diameters d and D) shown below is a design for an exoplanet rover wheel axle. Assuming the wheel is stuck, a torque from the motor is transmitted to the axle but it is not rotating. The reaction of the weight of the rover on the ground and the torque the wheel applies to the ground are represented by the force F acting in the center of the wheel hub (not shown) at point C. There is a sharp fillet at B with radius r shown below. Bearings are shown at point A and next to point B. You may assume the bearing at B resists the bending moment caused by the force F and acts like a fixed reaction. В A L2 L1 T L3 - ØD Ød R. r F SUBMIT ANSWERS HERE: Paramete Parameter Value Value SUT (tension) 400 MPa | L1 400 mm Suc (Compression) 600 Мра L2 200 mm Sy 380 MPа L3 100 mm 600 N-m ø d 40 mm F 0.2 kN ø D 55 mm R. r 8 mm5. 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 250 lb. Determine the torque M which must be exerted by the motor in order to overcome this load. The horse-head C weighs 60 lb and has a center of gravity at Gc. The walking beam ABC has a weight of 130 lb and a center of gravity at Gs, and the counterweight has a weight of 200 lb and a center of gravity at Gw. The pitman, AD, is pin connected at its ends and has negligible weight. -5 ft -6 ft !GB B 70° 20° 250 Ib 3 ft 2.5 ft
- 4-85 Change both of the 150 lb forces to 450 lbC6-70 The tower crane shown in Fig. construction materials. The counterweight C weighs 31,000 N; the motor M weighs 4500 N; the weight of the boom AB is 36,000 N and can be considered as acting at point G; and the weight of the tower is 23,000N and can be considered as acting at its midpoint. is used to lift It is desired that the reaction forces at the feet D and E always be greater than 4500 N to ensure that the tower is never in danger of tipping over. Plot Wmax, the max- imum load that can be lifted as a function of the dis- tance x (0Problem Statement Based on Problem 4-59 from the textbook. The board is used to hold the end of the cross lug wrench in the position shown. If a torque of 30 N*m about x axis is required to tighten the nut, determine the required magnitude of the force F needed to turn the wrench. Force F lies in a verticla plane. = 280 mm b=235 mm -Fach Student: b Z 60° a - y4/116 The shipboard crane is supporting a load of 4 tons in the position shown where 6- 30°. The hoisting drum B is operated by a high-torque electric motor. Calculate the added compression P in the hydraulie cylinder and the magnitude R of the additional force supported by the pin at 0, both due to the effect of the 4-ton load. Ans. P = 43,100 lb, R = 35,400 lb 24 10" C B 8" D, Problem 4/116A spring with squared and ground ends has 16 active coils diameter of 6 mm and pitch of 10 mm . If spring rate is 85 KN/m , determine the solid force?Problem Statement Based on Problem 4-59 from the textbook. The board is used to hold the end of the cross lug wrench in the position shown. If a torque of 30 N*m about x axis is required to tighten the nut, determine the required magnitude of the force F needed to turn the wrench. Force F lies in a verticla plane. a=275mm b=230mmA 50 lb force is applied to the wrench. Solve for the pin reaction at B as well as the gripping force.Equilibrium of Concurrent Force System. The piston of a reciprocating engine exerts a force of 175 kN on the crosshead when the crank is 45° (angle B) past TDC. If the stroke of the piston is 800 mm and the length of the connecting rod is 1.80 m, find the guide force and the force in the connecting rod. Hint: 1=½ stroke; Angle o may be solved using Sine Law in AACO. K= Compressive Force in the connecting Rod E= Piston Effort 70 120 F, = Guide Force Fig. P-1 Fig. P-2 a Tools: EF cos0=0; F sin .=0. R = Ev)* + (E#): ; R 771 =- : tane = sin A sin B sin CThe figure shows a wire cutter. Determine the cutting force on the wire at A when the 75-N forces are applied to the handgrips. (Hint: The horizontal components of pin forces at B and D are zero due to symmetry.)SEE MORE QUESTIONS