JEE Main 2026 — Laws of Motion Question with Solution
JEE Main 2026 (24 January Shift 1)
Question
A spring of force constant is cut into two pieces. If the ratio of their length is , then the force constant of smaller piece is .
Choose an option
Show full solutionCorrect option: A
Correct answer
A60
Step-by-step explanation
Spring force constant is inversely proportional to length:
So constant for a given spring material and structure.
Original spring: N/m, length .
Smaller piece has length (since length ratio is 1:3, smaller is of total).
For smaller piece:
N/m
So constant for a given spring material and structure.
Original spring: N/m, length .
Smaller piece has length (since length ratio is 1:3, smaller is of total).
For smaller piece:
N/m
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This is a previous-year question from JEE Main 2026, covering the Laws of Motion chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.