First slide

Work

Question

The pointer reading v/s load graph for a spring balance is as given in the figure. The spring constant is

Moderate

A

0.1 kg/cm
B

5 kg/cm
C

0.3 kg/cm
D

1 kg/cm

Solution

Spring constant $k = \frac{F}{x} = \frac{1}{slope of curve}$
$∴ k = \frac{4 - 1}{30} = \frac{3}{30} = 0 .1 kg / cm$

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