A spring whose unstrentches length is l has a force constant k . The spring is cut into two pieces of…

A spring whose unstrentches length is l has a force constant k. The spring is cut into two pieces of unstretches lengths l1 and l2 where, l1=nl2 and n is an integer. The ratio k1/k2  of the corresponding force constants, k1 and k2 will be:
  1. 1n2
  2. n2
  3. n
  4. 1n

Solution

Spring constants of the spring will be inversely proportional to length.
k1k2=l2l1=1n

Asked in: JEE Main 2019 (12 Apr Shift 2)

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