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Physics

System of Particles and Rotational Motion

A Physics chapter of the NEET syllabus, and how to practise it for the computer-based exam.

Exam rules change between cycles. Confirm dates, syllabus and pattern against NTA's official site. We are not NTA.

Weightage: what the paper actually did

System of Particles and Rotational Motion carried 5 questions in the NEET 2026 paper. One paper is a data point, not a destiny: NTA moves weight between chapters every cycle, which is why the weightage tables deserve care. The stable facts are the paper's shape: 180 questions, 720 marks, +4 right, −1 wrong.

Sample PYQs from this chapter

Real questions NTA asked from System of Particles and Rotational Motion, with the answer and the working. Try before you peek.

Question 1 · NEET 2026

The angular speed of a flywheel is increased from 600 rpm to 1200 rpm in 10 s. The number of revolutions completed by the flywheel during this time is:
  1. A.900
  2. B.600
  3. C.150
  4. D.300
Answer and explanation

Answer: C

With uniform angular acceleration the number of revolutions equals the average angular speed times the time: 600+12002=900\frac{600+1200}{2} = 900 rpm over 1060\frac{10}{60} min = 16\frac{1}{6} min, giving 900×16=150900 \times \frac{1}{6} = 150 revolutions, option (3). Equivalently, using ω22=ω12+2αθ\omega_2^2 = \omega_1^2 + 2\alpha\theta gives θ=300π\theta = 300\pi rad, so θ/2π=150\theta/2\pi = 150.

Question 2 · NEET 2020

Two particles of mass 5 kg and 10 kg respectively are attached to the two ends of a rigid rod of length 1 m with negligible mass. The centre of mass of the system from the 5 kg particle is nearly at a distance of :
  1. A.50 cm
  2. B.67 cm
  3. C.80 cm
  4. D.33 cm
Answer and explanation

Answer: B

The center of mass xCMx_{CM} is given by xCM=m1x1+m2x2m1+m2x_{CM} = \frac{m_1 x_1 + m_2 x_2}{m_1 + m_2}. Substituting, x_{CM} = \frac{5 * 0 + 10 * 100}{5 + 10} = \frac{1000}{15} \(\approx 67\ \mathrm{cm} \). Chapter: System of Particles and Rotational Motion.

How to practise System of Particles and Rotational Motion

Chapter by chapter, against real past-paper questions, on a screen: NEET is computer based from 2027. Read the chapter once, then attempt its PYQs until your accuracy stops climbing, and let the wrong answers tell you which lines to reread. If the chapter keeps refusing to stick, that has its own guide. There is also a free NEET mini mock with answers.

Nearby Physics chapters

Questions

How many questions did System of Particles and Rotational Motion have in NEET 2026?

System of Particles and Rotational Motion carried 5 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise System of Particles and Rotational Motion PYQs for NEET?

Explore available chapter-wise NEET practice in BrainIt, free until the 2027 exam. Review explanations and track chapter accuracy to guide your revision. Sample questions from this chapter are on this page.

Is System of Particles and Rotational Motion important for NEET 2027?

It is part of the Physics syllabus the paper draws from, and NEET 2027 is computer based, so practise it on a screen. Your own accuracy in the chapter matters more than any weightage table: a heavy chapter you already score well on needs less time than a light one you keep missing.

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