b) The torques shown in Fig. Q1(b) are exerted on pulleys A, B, C and D. Knowing that each shaft is solid, 120 mm long and made of steel with Modulus of Rigidity of 77 GPa and Modulus of Elasticity of 70 GPa i) Compute the angle of twist between A and C with the aid of free body diagrams. i1) State the direction of the twist (either clockwise or counterclockwise) for question Q1(b)i. 120 N-m 90 N-m 60 N-m 20 mm C 15 N-m 15 mm B 10 mm A

b) The torques shown in Fig. Q1(b) are exerted on pulleys A, B, C and D. Knowing that each shaft is solid, 120 mm long and made of steel with Modulus of Rigidity of 77 GPa and Modulus of Elasticity of 70 GPa i) Compute the angle of twist between A and C with the aid of free body diagrams. i1) State the direction of the twist (either clockwise or counterclockwise) for question Q1(b)i. 120 N-m 90 N-m 60 N-m 20 mm C 15 N-m 15 mm B 10 mm A

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Torsion

In mechanical engineering, torque, torsion, and twisting moment are three of the most important concepts which have different meanings. Torque is the consequence of a moment of a force that produces an angular acceleration in a body or induces rotational kinetic energy in a body. For instance, in an automobile, the power transmission shaft is a body that is always under rotation due to the external torque acting on it, this torque is created by the engine.

Question

b) The torques shown in Fig. Q1(b) are exerted on pulleys A, B, C and D. Knowing that
each shaft is solid, 120 mm long and made of steel with Modulus of Rigidity of 77 GPa
and Modulus of Elasticity of 70 GPa
i) Compute the angle of twist between A and C with the aid of free body diagrams.
i1) State the direction of the twist (either clockwise or counterclockwise) for question
Q1(b)i.
120 N-m
90 N-m
D
60 N-m
20 mm
C
15 N-m
15 mm
10 mm
Fig. Q1(b)

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