Work Power and Energy 5 Question 8

10. A spring of force constant k is cut into two pieces such that one piece is double the length of the other. Then, the long piece will have a force constant of

(1999,2M)

(a) (2/3)k

(b) (3/2)k

(c) 3k

(d) 6k

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Answer:

Correct Answer: 10. (b)

Solution:

  1. l1=2l2l1=23l

Force constant k1 length of spring 



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