Q2: A solid steel shaft A of 60 mm diameter rotates at 300 rev/min. Find the greatest power that can be transmitted for a limiting shearing stress of 60 MN/m2 in the steel. It is proposed to replace A by a hollow shaft B, of the Same external diameter but with a limiting shearing stress of 75 MN/m2 . Determine the internal diameter of B to transmit the same power at the same speed.

Q2: A solid steel shaft A of 60 mm diameter rotates at 300 rev/min. Find the greatest power that can be transmitted for a limiting shearing stress of 60 MN/m2 in the steel. It is proposed to replace A by a hollow shaft B, of the Same external diameter but with a limiting shearing stress of 75 MN/m2 . Determine the internal diameter of B to transmit the same power at the same speed.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.7.3P: A motor driving a solid circular steel shaft with diameter d = 1.5 in, transmits 50 hp to a gear at...

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PROBLEM NO. 1 A 40-mm diameter, 533-mm length shaft is drilled, for a part of its length L₁, to a 20 mm diameter and for the remaining length L2 to a 30 mm diameter drill hole. If the allowable shear stress is 80 MPa, find the maximum power that the shaft can transmit at a speed of 230 rev/min. If the angle of twist in the length of 20 mm diameter drill hole is equal to that in the 30 mm diameter drill hole, find the length of the shaft that has been drilled to 20 mm and 30 mm diameter.
Q2: A solid steel shaft A of 60 mm diameter rotates at 300 rev/min. Find the greatest power that can be transmitted for a limiting shearing stress of 60 MN/m2 in the steel. It is proposed to replace A by a hollow shaft B, of the Same external diameter but with a limiting shearing stress of 75 MN/m?. Determine the internal diameter of B to transmit the same power at the same speed.
A solid circular shaft is required to transmit 200 kW while turning at 90 rpm (rev/min). The allowable shearing stress is 42 MPa. Find the required shaft diameter.
Figure 1 is presented the solid shaft AB rotates at 650 rpm and transmits 30 kW from the motor machine tools connected to gears F and G. Assuming that, 10 kW is taken off at gear F and 20 k taken off at gear G, knowing that allowable torsional shear stress is equal to (65 plus last digit of student ID) MPa. Design the smallest permissible diameter of shaft AB. Figure 1 150 mm 225 mm 905 mm 150 mm 60 mm 100 mm D. 60 mm B.
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