Home/
Competitive Exams/
JEE Main & Advanced/
Physics/
Center of Mass, Momentum and Collision/
Question 30565
JEE Physics · Hard

Center of Mass, Momentum and Collision: JEE — Inelastic with Spring MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
JEE — Inelastic with SpringHardQuestion 30565

Question

A block slides along a surface and collides with a spring (perfectly elastic spring collision). During maximum compression, relative velocity of block and spring end is:
  1. A
    v_initial
  2. B
    Zero
    Correct
  3. C
    v_initial/2
  4. D
    2v_initial

Correct answer

Zero

Explanation

At maximum compression, both block and spring end (wall) have the same velocity (no relative motion). This is where all relative KE is stored as spring PE.

Review Center of Mass, Momentum and Collision notesStart timed chapter practice