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Grade: 12th pass
        
 If ‘S’ is stress and ‘Y’ is young’s modulus of material of a wire, the energy stored in the wire per unit volume is
(a) S2/2Y
(b) 2S2Y
(c) S/2Y
(d) 2Y/S2
4 years ago

Answers : (2)

Aditi Chauhan
askIITians Faculty
396 Points
							

(a) Energy stored per unit volume,

E = 1/2 * stress * strain

We know that,

E = 1/2 * stress * stress/Y = 1/2 .S2/Y

4 years ago
ginny
13 Points
							
y= stress /strain
strain=stress/y
e= ½ *stress*strain
e= 1/2(stress*stress)/y
e=1/2 s^2/y
the answer is option (a)
15 days ago
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