A) K/n
B) n K
C) \[\frac{nK}{(n+1)}\]
D) \[\frac{(n+1)\,K}{n}\]
Correct Answer: B
Solution :
When a spring is cut into n equal parts, the spring constant k of each part is given by \[\frac{1}{K}=\frac{1}{K}+\frac{1}{K}+\frac{1}{K}......\,\,n\,\,terms\,\,=\,\,\frac{n}{K}\]\[\operatorname{k}\,\,=\,\,nK\] - k is spring constant of one small piece - k is spring constant of original.You need to login to perform this action.
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