First slide

Elastic Modulie

Question

One end of a 1 m long cylinder is fixed and the other end is free. A 100 N-m torque is applied at the free end and the angle of twist of the free end is 0.5^o. Then total elastic strain energy stored in the cylinder is

Difficult

A

0.486 J
B

1.244 J
C

0.436 J
D

2.36 J

Solution

$U = \frac{1}{2} Tθ = \frac{1}{2} \times 100 \times (\frac{π}{180} \times 0 .5) J = 0 .436 Joule$

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