NEET UG 2019 · Physics · Question 35
NEET 2019 Physics, question 35
Question 35 of the NEET 2019 paper (code P1) is a Physics question from Laws of Motion. Its idea, Friction in a Rotor (Death Well), was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q35 · Physics
A block of mass 10 kg is in contact against the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is vertical and rotating about its axis, will be : m/s²)
- 1 rad/s
- 2 rad/s
- 310 rad/sOfficial answer
- 410π rad/s
Official answer: option 3 · NTA final answer key
Same idea
The only question on Friction in a Rotor (Death Well)
No other NEET paper from 2017–2026 tested this exact idea.
Friction in a Rotor (Death Well): every question and how it was framed
The chapter
Laws of Motion in ten years of NEET
20 questions from 2017–2026, asked in 10 of 10 papers, about 1.9 a paper. Friction Forces alone had 4.