Wave Mechanics Question 521
Question: A metal rod of Young’s modulus $ 2\times 10^{10}N{{m}^{-2}} $ undergoes an elastic strain of 0.06%. The energy per unit volume stored in J m-3 is
Options:
A) 3600
B) 7200
C) 10800
D) 14400
Show Answer
Answer:
Correct Answer: A
Solution:
[a] U / volume $ =\frac{1}{2}Y\times strain^{2}=3600J{{m}^{-3}} $
$ [Strain=0.06\times {{10}^{-2}}] $
BETA
