Question

A shaft is supported by two bearings placed 1m apart. A 400mm diameter pulley is mounted
at a distance of 200mm 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 KN. Another pulley 400mm diameter is
placed 200mm to the left of right hand bearing and is driven with the help of electric motor
and belt which is placed horizontally to the right. The angle of contact for both the pulleys is
180 degree and µ = 0.25. Determine the suitable diameter for a solid shaft allowing working
stress of 63 Mpa in tension and 42 Mpa in shear for the material of shaft. Assume that the
torque on one pulley is equal to that on the other pulley.

Answer 1

Answer:

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