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Questions  

A spring when loaded has a potential energy ‘E’. Then ‘m’ turns out of ‘n’ turns are removed from the spring. If the same load is suspended, then the energy stored in the spring is

a
n(n−m)E
b
mEn
c
(n−m)mE
d
(n−m)nE

detailed solution

Correct option is D

PE=12Kx2=F22K,Kα1l

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Two springs of spring constants k1 and k2 are joined in series. The effective spring constant of the-combination is given by:


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