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13.Oscillations
easy
A spring having a spring constant $‘K’$ is loaded with a mass $‘m’$. The spring is cut into two equal parts and one of these is loaded again with the same mass. The new spring constant is
A
$\frac{K}{2}$
B
$K$
C
$2K$
D
${K^2}$
Solution
(c) Spring constant $(k) \propto \frac{1}{{{\rm{Length \,of \,the \,spirng\, (}}l{\rm{)}}}}$ as length becomes half, $k$ becomes twice is $2k$.
Standard 11
Physics
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