Does the energy stored in a spring changes when it stretched or compressed ?
Its potential energy (energy stored) increases when it is stretched or compressed.
A wire is suspended by one end. At the other end a weight equivalent to $20\, N$ force is applied. If the increase in length is $1.0\, mm$, the increase in energy of the wire will be ……. $joule$
$K$ is the force constant of a spring. The work done in increasing its extension from ${l_1}$ to ${l_2}$ will be
The Young's modulus of a wire is $Y.$ If the energy per unit volume is $E$, then the strain will be
An Indian rubber cord $L$ metre long and area of cross-section $A$ $metr{e^2}$ is suspended vertically. Density of rubber is $D$ $kg/metr{e^3}$ and Young's modulus of rubber is $E$ $newton/metr{e^2}$. If the wire extends by $l$ metre under its own weight, then extension $l$ is
Identical springs of steel and copper are equally stretched. On which more work will have to be done ?
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