5.Work, Energy, Power and Collision
easy

The spring extends by $x$ on loading, then energy stored by the spring is :(if $T$ is the tension in spring and $k$ is spring constant)

A

$\frac{{{T^2}}}{{2k}}$

B

$\frac{{{T^2}}}{{2{k^2}}}$

C

$\frac{{2k}}{{{T^2}}}$

D

$\frac{{2{T^2}}}{k}$

Solution

(a)$U = \frac{{{F^2}}}{{2k}} = \frac{{{T^2}}}{{2k}}$

Standard 11
Physics

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