. Two shafts A and B whose axes are intersecting but inclined to each other at 20° are connected by means of a universal joint. A flywheel of weight 200 kN and radius of gyration 100 mm is fitted to shaft B. If the shaft A rotates at uniform speed of 2000 rpm, how can you calculate the maximum torque in shaft B?
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- Three bars, each 2 ft long and weighing 9.66 lb, are pinned together toform the equilateral frame shown in Fig. P-1245. They rotate in a horizontalplane about a vertical axis at A. What torque is required to cause an angularacceleration of 12 rad per sec? What is the reaction at A when the framereaches a speed of 38.2 rpm?For the same cross-sectional area A , for a square cross-sectional area shaft and a circular cross-sectional area shaft, both of length l, in torsion which has the greater angular twist θ, and by what multiple is it greater ?Suppose a 30 lb truck wheel 18 in. in diameter has a radius of gyration of 4 in. and the 6120 lb truck’s weight is distributed equally to each of the four wheels.a. If the truck can supply 150 lb x ft of torque to each wheel, how fast would the wheel want to accelerate if it didn’t slip? b. What would the coefficient of friction have to be in order to keep the wheel from slipping
- A uniform wheel of 600 mm diameter, weighing 5 kN rests against a rigid rectangular block of 150 mm of height. Find the least pull, through the centre of the wheel, required just to turn the wheel over the corner A of the block. Also find the reaction on the block. Take all the surfaces to be smooth.Find βW for the torque- angle diagram shown. The enclosed areas are , A1 = 400 J , A2 = 800 J , A3 = 550 J and A4 = 150 J Find the moment of inertia for a flywheel which will keep the speed within the range 410 to 416 rev/min. and find the mass of a suitable flywheel with a radius of gyration of 0.5 m.A 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?
- A gear engine automobile is traveling along a curved track of 120m radius. Each of the four wheels has a moment of inertia of 2.3 kg m2 and an effective diameter of 600 mm. The rotating parts of the engine have a moment of inertia of1.25kg m2 the gear ratio of the engine to back wheel is 3:2.The engine axis is parallel to the gear axle and the crank shaft rotates in the same sense as the road wheels. The mass of the vehicle is 2050 kg and the center of mass is 520 mm above the road level. The width by the track is 1.6m, what will be the limiting speed of the vehicle if all the four wheels maintain contact with the road surface (b) Explain the function of a flywheel from a crank effort diagram.two cylinders are connected to form a parallel cylinder actuatingsystem. Assume the bore and rod diameters of the left cylinder are 120 mm and 60 mm, respectively, and that those of the right cylinder are 100 mm and 50 mm. If the mass of the external loads to be driven by the left and right cylinders are 750 and 500 kg, respectively, and the back pressure in both rod-end chambers is 200 kPa, calculate the operating pressure of each cylinder for driving the loads. (Assume that the left cylinder requires 550 kPa for no-load extension and the right one requires 500 kPa.) If the supplying flow is 150 L ・ min−1, what are the extending velocities of those cylinders? Consider the friction and back pressure for the design Will those two cylinders extend simultaneously under the stated condition2. A shaft is supported on bearings A and B, 800 mm between centres. A 20 degrees straight tooth spur gear having 600 mm pitch diameter, is located 200 mm to the right of the left hand bearing A, and a 700 mm diameter pulley is mounted 250 mm towards the left of bearing B. The gear is driven by a pinion with a downward tangential force while the pulley drives a horizontal belt having 180 degrees angle of wrap. The pulley also serves as a flywheel and weighs 2000 N. The maximum belt tension is 3000 N and the tension ratio is 3: 1. Determine the maximum bending moment and the necessary shaft diameter if the allowable shear stress of the material is 40 MPa.
- A 1.5 in diameter 10-spline shaft and permanent fit has a compressive force of 2000 lbs. Find the torque applied if hub length 2 in.The turning-moment diagram for an engine consists of two isosceles triangles each with a height equivalent to a torque of 16kNm. The bases of the triangles lie between ? = 0 ? and ? = 180 , and ? = 180? and ? = 360? respectively. If the engine is to rotate with a mean speed of 130 rpm, calculate the following: the mass of the flywheel having a radius of gyration 1.1m to restrict the fluctuation of speed to +1.5% of the mean speed.A 10" in diameter helical gear carries a torque of 3,000 in-lb. It has 20 deg. Involute stub teeth and a helix angle of 30 deg. Determine: (a) the tangential component of the load on the teeth in the plane of rotation; (b) the separating component of the load on the teeth; (c) the angle of obliquity in th plane normal to the pitch element of the tooth, and (d) the resultant load on the tooth