60 Ib 90 lb 30 45 150 lb
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- 13-2. Determine the acceleration of the 30-kg block shown in Figure P13–2 above.ower shaft running at a steady speed of 175 rev/min driy 8 single-plate friction clutch of external and intern mm respectively. The masses on the countershaft have £ 250 mm and a total mass of 350 kg. The axial spring I 198 450 N, and 4 = 0-3. Assuming uniform acceleration guired to reach full speed from rest, and the work dissipad during that time. (U. Lond.) (Ans. : 99 gThe speed of the engine mechanism shown in Figure 1 is controlled by the Porter governor. All arms of the governor are 20 mm and are hinged at a distance of 4 mm from the axis of rotation. The mass of each ball is 100 g and the mass of the sleeve is 500 g. The governor sleeve begins to rise at 40 rad/s. when the links are at an angle of 5° to the vertical. Assuming the friction force to be constant: 3.1. Draw the port governor mechanism and clearly lable it. (06)3.2. Calculate the minimum speed of rotation (in rad/s) when the inclination of the arms to the vertical is 10°.
- Find the acceleration of the body from t=12s to t=15sQuestion 3 The speed of the engine mechanism shown in Figure 1 is controlled by the Porter governor. All arms of the governor are 20 mm and are hinged at a distance of 4 mm from the axis of rotation. The mass of each ball is 100 g and the mass of the sleeve is 500 g. The governor sleeve begins to rise at 40 rad/s. when the links are at an angle of 5° to the vertical. Assuming the friction force to be constant 3.1. Draw the port governor mechanism and clearly lable it. 3.2. Calculate the minimum speed of rotation (in rad/s) when the inclination of the arms to the vertical is 10°..A cast iron flywheel with mean radius of 250 mm runs at average of 100 rad/s and has a maximum fluctuation of energy ∆KE of 2500 N-m. If the coefficient of fluctuation of speed of 0.01. which of the following is the mass of the flywheel rim? choices: 400 kg 100 kg 25 kg 4 kg
- The 10 g bullet is fired horizontally at 1200 m/s into the 140 g block resting on a smoothsurface. If the bullet becomes embedded in the block, what is the velocity of the blockimmediately after impact? A) 1125 m/s B) 80 m/sC) 1200 m/s D) 75 m/s Please show all steps in solutionSolve Prob. 7.10 assuming that the pick-up truck has front-wheel drive.In the system shown in Fig. P-13-3.14, body A is dropping at 40 fps when a brake force P=80lb is applied. Determine the time for A to come to rest. Neglect the thickness of the brake block
- A woman pushes a box of N 500 with force pointing at an angle of 300 below the horizontal as shown in Figure 14-13. (A) What is the value of F needed to start sliding the chest A (b) If the woman continues to push the chest with the same force after the start of sliding, what will be the value of the acceleration? Assume a box and floor are made of wood and use the values of friction coefficients given is 0.7. See Figure 3-11Q8 / By using the instantaneous center method, drive the following equation for the porter governor assuming that the length of the upper and lower arms is equal and both are pivoted oko axis of rotation, where N is the governor speed in (rom), me is the mass of each ball in (k9). M is the mass of sleeve in (kg) and h is the governor height in (m). m, + M N = 29.9 m, hA load is raised 11 ft by the gears and wheel system below. Gear A is initially rotating at rest and accelerates uniformly to omega = 24 rpm in t= 10 sec and maintain then maintain this constant 24 rpm speed. The dimensions are rA= 1 in, rB= 9 in and rC=16 in. 2) After 10 sec, find the distance s2 in feet and in NC es needed to reach the 11 ft, find thetaC2(t), alphaA2, alphaB2 in rad/s^2, omegaA2(t), omegaB2(t) in rad/s, thetaA2(t), in rad and the distance s2 in ft that should be made to get to the 11 ft raising distance of the load. 3) Deduce the number of revolutions made by gear A and how long it will take, to raise the load up to 11 ft.