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The shaft, lever, and handle are welded together and constitute a single rigid body. Their combined mass is 28 kg with mass center at G. The assembly is mounted in bearings A and B, and rotation is prevented by link CD. Determine the forces exerted on the shaft by bearings A and B while the
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- The three bars are welded together to form a rigid unit that is supported by three slider bearings. Neglecting the weights of the bars, determine the magnitudes of the three bearing reactions caused by the 120-lbin. couple.arrow_forwardQ39/ The shaft, lever, and handle are welded together and constitute a single rigid body. Their combined mass is 28 kg with mass center at G. The assembly is mounted in bearings A and B, and rotation is pre- vented by link CD. Determine the forces exerted on the shaft by bearings A and B while the 30-N m couple is applied to the handle as shown. Would these forces change if the couple were applied to the shaft AB rather than to the handle? 100 mm 450 mm 300 mm 300 mm 600 mm 220 mm 30 N.m 200 mm 200 Fig. 39 mmarrow_forwardThe shaft, lever, and handle are welded together and constitute a single rigid body. Their combined mass is 21 kg with mass center at G. The assembly is mounted in bearings A and B, and rotation is prevented by link CD. Determine the magnitudes of the forces exerted on the shaft by bearings A and B while the couple is applied to the handle as shown. Would these forces change if the couple were applied to the shaft AB rather than to the handle? 535 mm. 280 mm Answers: A- B- 355 mm 280 mm 125 mm D 405 mm 37N-m 405 mm 235 mm N N Darrow_forward
- The skid-steer loader has a mass of 1.18 Mg, and in the position shown. The center of mass is at G1. There is a 300-kg stone in the bucket, with center of mass at G2. There is a similar linkage on each side of the loader. - Determine the magnitude of the reaction of the pair of wheels B on the ground. - Determine the magnitude of the reaction of the pair of wheels A on the ground. - Determine the magnitude of the force in the hydraulic cylinder CD. - Determine the magnitude of the force the force exerted on ED at the pin E.arrow_forwardThe ramp is used as passengers board a small commuter airplane. The total mass of the ramp and six passengers is 730 kg with a mass center at G. Determine the force in the hydraulic cylinder AB (positive if in tension, negative if in compression) and the magnitude of the pin reaction at C.arrow_forwardmass The power unit A of the tractor-scraper has a mass of 5.9 Mg with mass center at G₁. The fully loaded trailer-scraper unit B has a of 22.7 Mg with mass center at G₂. Positioning of the scraper is controlled by two hydraulic cylinders EF, one on each side of the machine. Calculate the compression F in each of the cylinders and the magnitude of the force supported by each of the pins at H, one on each side. Assume that the wheels are free to turn so that there are no horizontal components of force under the wheels. Answers: F= i H= i 870 1480 1480 11701480540 Dimensions in millimeters 1 KN KNarrow_forward
- 5. 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 ftarrow_forwardThe 15-lb bar BC is connected to a disk centered at A, and to a bar DC. If the disk is made to rotate at a constant speed of 180 rpm, determine the vertical components of the force exerted on bar BC at B and at C.arrow_forwardThe machine shown is used to help load luggage into airliners. The combined mass of the conveyor and luggage is 110 kg with mass center at G. Determine and plot the force in the hydruaulic cylinder BC (report your answer as a positive value) as a function of over the range 5° 0 ≤ 36°, then answer the questions. Assume DE = 2070 mm, CD = 1280 mm, c = 1680 mm, d = 1130 mm, e = 570 mm, f = 2380 mm. t Questions: E B i D If 0 = 11°, BC = If 0 = 21°, BC = i Over this range, the maximum value for BC = i N N N and occurs when 8 =arrow_forward
- A tractor of mass 1200 kg is used to lift gravel weighing 8 KN. Determine the reaction at eachof the front wheel.arrow_forwardFind the force P required to pull the 40-kg homogeneous roller with radius 720mm over the 90-mm curb.arrow_forwardDetermine 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 = 118 N and (a) e = 30°, B = 25° and (b) e = 21°, B = 29° Answers: (a) Fn= i N, F: = i N (b) Fn = i N. F:= Narrow_forward
- International Edition---engineering Mechanics: St...Mechanical EngineeringISBN:9781305501607Author:Andrew Pytel And Jaan KiusalaasPublisher:CENGAGE L