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5.Work, Energy, Power and Collision
easy
The pointer reading v/s load graph for a spring balance is as given in the figure. The spring constant is ........ $ kg/cm$

A
$0.1$
B
$5 $
C
$0.3$
D
$1$
Solution
(a)Spring constant $k = \frac{F}{x} = $Slope of curve
$k = \frac{{4 – 1}}{{30}} = \frac{3}{{30}} = 0.1\,kg/cm$
Standard 11
Physics
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