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Saturday, 31 October

JEE Main 2024 · PhysicsNumerical answerNumerical valueMediumApplication

JEE Main 5 April 2024, Shift 1, Physics Q52

Question 52 of 90 in this shift, Physics question 22 of 30, Section B.

Three blocks M1M_1, M2M_2, M3M_3 having masses 4 kg, 6 kg and 10 kg respectively are hanging from a smooth pulley using rope 1, 2 and 3 as shown in figure. The tension in the rope 1, T1T_1 when they are moving upward with acceleration of 2 ms−22\,\mathrm{ms^{-2}} is ________ N(if g=10 m/s2g = 10\ \mathrm{m/s^2}).

The figure, in words

Smooth pulley at top with rope 1 (tension T1) holding block M1 (4 kg); rope 2 (T2) hangs M2 (6 kg) below M1; rope 3 (T3) hangs M3 (10 kg) below M2. Weights marked 4g, 6g, 10g; acceleration 2 m/s^2 marked beside the pulley.

Official answer

240

NTA final key.

Chapter
Laws of Motion
Topic
Newton's Laws of Motion
Idea tested
Ideal String Tension

Same idea in other shifts

Asked 3× in all
  1. 30 Jan 2024, Shift 2 · Q33Three blocks AA, BB and CC are pulled on a horizontal smooth surface by a force of 80N80N as shown in figure The tensions T1T_1 and…EasySingle correctHas a figure
  2. 28 Jun 2022, Shift 1 · Q57A hanging mass M is connected to a four times bigger mass by using a string-pulley arrangement, as shown in the figure. The bigger mass is…MediumNumerical valueHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.