Properties of matterHard
Question
A wire fixed at the upper end stretches by length l by applying a force F. The work done in stretching is
Options
A.F/2l
B.Fl
C.2Fl
D.Fl/2
Solution
Value of ′g′ will decreases with increase in height.
Work done = 
kx2 = kl2 where l is the total tensions.
= (kl)l = Fl
kx2 = kl2 where l is the total tensions. =
(kl)l = FlCreate a free account to view solution
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