An elastic spring of unstretched length 
and force constant 
is stretched by a small length 
. It is further stretched by another small length 
. Work done during the second stretching is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Elastic potential energy of spring, 
… .(i)
Here, 
spring constant, 
displacement of spring Work done for displacement 
of spring,
…… (ii)
Work done during second stretching
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