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Saturday, 31 October

JEE Main 2026 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 5 April 2026, Shift 1, Physics Q29

Question 29 of 75 in this shift, Physics question 4 of 25, Section A.

Three masses m1=4m_1 = 4 kg, m2=4m_2 = 4 kg and m3=6m_3 = 6 kg are suspended from a fixed smooth frictionless pulley as shown in the figure below. The value of T1/T2T_1/T_2 is ________ (take g=10 m/s2g = 10\ \mathrm{m/s^2})

The figure, in words

Fixed pulley hung from ceiling; on one side m1 (4 kg) hangs with string tension T1; on the other side m2 (4 kg) hangs with string tension T1 above it, and m3 (6 kg) hangs below m2 through a second string of tension T2.
  1. (1)5/3Official answer
  2. (2)2/3
  3. (3)3/5
  4. (4)2/5

Official answer

Option 1

NTA final key.

Chapter
Laws of Motion
Topic
Newton's Laws of Motion
Idea tested
Standard Atwood Machine

Same idea in other shifts

Asked 5× in all
  1. 6 Apr 2024, Shift 1 · Q32A light string passing over a smooth light pulley connects two blocks of masses m1m_1 and m2m_2 (where m2>m1m_2 > m_1). If the acceleration…MediumSingle correct
  2. 9 Apr 2024, Shift 1 · Q34A light unstretchable string passing over a smooth light pulley connects two blocks of masses m1m_1 and m2m_2. If the acceleration of the…EasySingle correct
  3. 31 Jan 2024, Shift 2 · Q33A light string passing over a smooth light fixed pulley connects two blocks of masses m1m_1 and m2m_2. If the acceleration of the system…EasySingle correctHas a figure
  4. 26 Jul 2022, Shift 2 · Q48Two masses M1M_1 and M2M_2 are tied together at the two ends of a light inextensible string that passes over a frictionless pulley. When…EasyDiagram basedHas 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.