Consider the torsion equation given below. $\frac TJ=\frac{\tau}{R}=\frac{G\theta}{L}$ What the term J/R represents in the above equation?

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Consider the torsion equation given below.

$\frac TJ=\frac{\tau}{R}=\frac{G\theta}{L}$

What the term J/R represents in the above equation?

ASection modulus

BPolar modulus

CShear modulus

DNone of these

Answer:

B. Polar modulus

Read Explanation:

The term J/R in the torsion equation represents the polar modulus of a bar. It is obtained by dividing the polar moment of inertia of the bar (J) by its radius (R). The polar modulus is a measure of a bar's resistance to torsion.