JEE Main 2020PhysicsCenter of Mass Momentum and CollisionMediumMCQ

JEE Main 2020 — Center of Mass Momentum and Collision Question with Solution

JEE Main 2020 (07 Jan Shift 1)

Question

Three point particles of masses 1.0 kg, 1.5 kg and 2.5 kg are placed at three corners of a right angle triangle of sides 4.0 cm, 3.0 cm and 5.0 cm as shown in the figure. The centre of mass of the system is at a point:

Choose an option

Show full solutionCorrect option: D
Correct answer
D0.9 cm right and 2.0 cm above 1 kg mass.

Step-by-step explanation

Take 1 kg mass at origin

Xcm=1×0+1.5×3+2.5×05=0.9 cm
Ycm=1×0+1.5×0+2.5×45=2 cm

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About this question

This is a previous-year question from JEE Main 2020, 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.