Figure shows two steel shafts with the same diameter and weight of 152 lb each. Determine the response of the wall at A on the lower shaft while ignoring friction at all contact surfaces. 60% 60
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Figure shows two steel shafts with the same diameter and weight of 152 lb each. Determine the response of the wall at A on the lower shaft while ignoring friction at all contact surfaces.
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- A pulley 610 mm diameter is driven at 300 revs/min by a belt, the tensions in the tight and slack sides of the belt being 670 N and 270 N. Find the power transmitted.A wagon weighing 5100 Kg moving at a speed of 8 km/h has to be brought to rest. Springs made of wire diameter 25mm with a Dm of 250mm and with 24 turns are available. Find the number of springs required in buffer to stop the wagon at a compression of 180mm. b)A close coiled helical spring is made of diameter wire 25mm. The spring index is 8. Findthe number of turns required and maximum allowable load if the allowable shear stress is100 MPa and elongation is limited to 40mm. [G=80 GPaA plate clutch has 3 discs on the driving shaft and 2 discs on the driven shaft, providing four pairs of contact surfaces. The outside diameter of the contact surfaces is 240 mm and inside diameter 120 mm. Assuming uniform pressure and coeff. Of friction is 0.3. Find the total spring load pressing the plates together to transmit 23kw power at 1475 revolution per minute. If there 6 springs each of stiffness 13 kN/m and each of the contact surfaces has worn away by 1.25 mm. find the maximum power that can be transmitted assuming uniform wear. A plate clutch has 3 discs on the driving shaft and 2 discs on the driven shaft, providing four pairs of contact surfaces. The outside diameter of the contact surfaces is 240 mm and inside diameter 120 mm. Assuming uniform pressure and coeff. Of friction is 0.3. Find the total spring load pressing the plates together to transmit 23kw power at 1475 revolution per minute. If there 6 springs each of stiffness 13 kN/m and each of the contact surfaces…
- Q2\ A circular disk of mass M and radius R is connected by a spring of modulus k as shown in the figure. If it is free to roll on a horizontal surface without slipping, find its natural frequency. RQ2 / A shaft transmitting 15kW at 200r.p.m. are supported by two bearings placed 1 m apart. A 600 mm diameter pulley is mounted at a distance of 300 mm to the right of left hand bearing and this drives a pulley directly below it with the help of belt having maximum tension of 2.25kN. Another pulley 400 mm diameter is placed 200 mm to the left of right hand bearing and is driven with the help of electric motor and belt having maximum tension of 3.376kN, which is placed horizontally to the right. The angle of contact for both the pulleys is180° and =0.24. Determine the suitable diameter for a solid shaft if the bending moment acting on the shaft is reversed, allowing working stress of 42MPA in shear for the material of shaft and have yield stress of 400MPA and ultimate stress of 500MP.. And design the keys which support each pulley if the material of the keys is the same for the material of shaft.By determining the equivalent spring constant of the mass spring system given in the figure, we calculate the equation of motion undamped. write for the situation.
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