A wire elongates by 1 mm when a load W is hanged from it. If the wire goes over a pulley and two weights W each are hung at the two ends, the elongation of the wire will be (in mm)
A
zero
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Elongation in first case, 
In second case, 
So, second case also have the same elongation.
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