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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumApplication

JEE Main 30 June 2022, Shift 1, Physics Q36

Question 36 of 90 in this shift, Physics question 6 of 30, Section A.

A 2 kg block is pushed against a vertical wall by applying a horizontal force of 50 N. The coefficient of static friction between the block and the wall is 0.5. A force F is also applied on the block vertically upward (as shown in figure). The maximum value of F applied, so that the block does not move upward, will be : (Given : g=10 ms−2\mathrm{ms^{-2}})

The figure, in words

A block labelled '2 kg' touches a vertical hatched wall labelled 'wall'; a horizontal arrow labelled '50 N' points at the block towards the wall; an arrow labelled 'F' points vertically upward from the top of the block.
  1. (1)10 N
  2. (2)20 N
  3. (3)25 N
  4. (4)45 NOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Laws of Motion
Topic
Friction
Idea tested
Block on a Vertical Wall

Same idea in other shifts

Asked 2× in all
  1. 24 Feb 2021, Shift 1 · Q21The coefficient of static friction between a wooden block of mass 0.5 kg and a vertical rough wall is 0.2. The magnitude of horizontal…EasyNumerical value

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.