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  4. Force constant has the same dimensions as

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Q. Force constant has the same dimensions as

Physical World, Units and Measurements

Solution:

$\operatorname{In} F=-K x$,
$K$ is called force constant
$[K]=\left[\frac{F}{x}\right]=\left[\frac{\text { force }}{\text { extension }}\right]=\frac{ MLT ^{-2}}{ L }= MT ^{-2}$
[Surface Tension] $=\left[\frac{\text { force }}{\text { length }}\right]=\frac{ MLT ^{-2}}{ L }= MT ^{-2}$