NEET2017Physics-Oscillations
NEET 2017 Physics Spring Force Constant MCQ Question
Type: MCQ-numerical-Medium-Class 11
A spring of force constant k is cut into lengths of ratio 1:2:3. They are connected in series and the new force constant is k'. Then they are connected in parallel and force constant is k''. Then k' : k'' is
A
1 : 6
B
1 : 9
C
1 : 11
D
1 : 14
Correct Answer
Option C
Detailed Explanation
When springs are connected in series, the reciprocal of the total force constant is the sum of the reciprocals of the individual constants. In parallel, the total force constant is the sum of the individual constants.
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