Natural length of a spring is $60\, cm$, and its spring constant is $4000\, N/m$. A mass of $20\, kg$ is hung from it. The extension produced in the spring is,.......$cm$ (Take $g = 9.8\;m/{s^2}$)
Natural length of a spring is $60\, cm$, and its spring constant is $4000\, N/m$. A mass of $20\, kg$ is hung from it. The extension produced in the spring is,.......$cm$ (Take $g = 9.8\;m/{s^2}$)
$4.9$
$0.49 $
$9.4$
$0.94$
Natural length of a spring is $60\, cm$, and its spring constant is $4000\, N/m$. A mass of $20\, kg$ is hung from it. The extension produced in the spring is,.......$cm$ (Take $g = 9.8\;m/{s^2}$)
If $x$ is the extension produced in spring.
$F = kx$ $⇒$ $x = \frac{F}{k}$= $\frac{{mg}}{k} = \frac{{20 \times 9.8}}{{4000}} = 4.9\,cm$