JEE Main 2021PhysicsCenter of Mass Momentum and CollisionEasyNumerical

JEE Main 2021Center of Mass Momentum and Collision Question with Solution

JEE Main 2021 (17 Mar Shift 2)

Question

The disc of mass M with uniform surface mass density σ is shown in the figure. The center of mass of the quarter disc (the shaded area) is at the position xa3π, xa3π where x is _______ . (Round off to the Nearest Integer) [a is an area as shown in the figure]

Enter your answer

Show full solutionCorrect answer: 4
Correct answer
4

Step-by-step explanation

C.O.M of quarter disc is at 4a3π,4a3π

=4

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Center of Mass Momentum and Collision chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2021, covering the Center of Mass Momentum and Collision 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.