3.30 A solid steel shaft transmits 20 hp while running at 120 rev/min. Find the smallest safe diameter of the shaft if the shear stress is limited to 5000 psi and the angle of twist of the shaft is not to exceed 9° in a length of 10 ft. Use G = 12 × 106 psi for steel.

3.30 A solid steel shaft transmits 20 hp while running at 120 rev/min. Find the smallest safe diameter of the shaft if the shear stress is limited to 5000 psi and the angle of twist of the shaft is not to exceed 9° in a length of 10 ft. Use G = 12 × 106 psi for steel.

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 3.12.4P: The stepped shaft shown in the figure is required to transmit 600 kW of power at 400 rpm. The shaft...

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Slope and Deflection

The slope in a deflected beam is described as an angle in radians made by the tangent of the section with the original axis of the beam. The deflection at any point on the axis of the beam is defined as the lateral displacement of the point before and after loading.

Question

3.30 A solid steel shaft transmits 20 hp while running at 120 rev/min. Find the
smallest safe diameter of the shaft if the shear stress is limited to 5000 psi and the
angle of twist of the shaft is not to exceed 9° in a length of 10 ft. Use G= 12 x 106
psi for steel.

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