Learn

Saturday, 31 October

JEE Main · Physics · System of Particles and Rotational Motion

MOI of Discrete Particles

JEE Main asked MOI of Discrete Particles 5 times in 5 of the 108 shifts Lumi analysed, in 2020, 2022 and 2024. It belongs to Moment of Inertia, in System of Particles and Rotational Motion (Physics). The longest wait between two years asking it was 2 years. In 2022 and 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
5
in 5 shifts
Years
3 of 8
First asked
2020
last in 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2022 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.050.10’170.08’200’210.07’220’230.09’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 0 in 24 shifts · 2022: 2 in 24 shifts · 2023: 0 in 12 shifts · 2024: 2 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20242 of 18
  • 20230 of 12
  • 20222 of 24
  • 20210 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • Moment of inertia of masses at triangle edge centres
  • Moi of particles at square corners

Difficulty

Easy 2Medium 2Hard 1

5 of the 5 questions had a numerical answer.

Every question

All 5 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 27 Jan 2024, Shift 1 · Q52Four particles each of mass 1 kg are placed at four corners of a square of side 2 m. Moment of inertia of system about an axis…EasyNumerical value
  2. 6 Apr 2024, Shift 2 · Q56Three balls of masses 2 kg, 4 kg and 6 kg respectively are arranged at centre of the edges of an equilateral triangle of side 2 m. The…MediumNumerical value
  3. 30 Jun 2022, Shift 1 · Q53Four particles with a mass of 1 kg, 2 kg, 3 kg and 4 kg are situated at the corners of a square with side 1 m (as shown in the figure).…EasyNumerical valueHas a figure
  4. 26 Jul 2022, Shift 1 · Q52A disc of mass 1 kg and radius R is free to rotate about a horizontal axis passing through its centre and perpendicular to the plane of…HardNumerical value
  5. 3 Sep 2020, Shift 2 · Q22An massless equilateral triangle EFG of side 'a' (As shown in figure) has three particles of mass m situated at its vertices. The moment…MediumNumerical valueHas a figure

Shifts: 3 Sep 2020, Shift 2, 30 Jun 2022, Shift 1, 26 Jul 2022, Shift 1, 27 Jan 2024, Shift 1, 6 Apr 2024, Shift 2.

Same topic

Other ideas in Moment of Inertia

Moment of Inertia has 18 ideas JEE Main has asked; 9 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas