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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumApplication

JEE Main 26 July 2022, Shift 1, Physics Q47

Question 47 of 90 in this shift, Physics question 17 of 30, Section A.

As per the given figure, two blocks each of mass 250 g are connected to a spring of spring constant 2 Nm−12\ \mathrm{Nm^{-1}}. If both are given velocity vv in opposite directions, then maximum elongation of the spring is :

The figure, in words

Two rectangular blocks, each labelled 250 g, joined by a coiled spring drawn horizontally between them.
  1. (1)v22\frac{v}{2\sqrt{2}}
  2. (2)v2\frac{v}{2}Official answer
  3. (3)v4\frac{v}{4}
  4. (4)v2\frac{v}{\sqrt{2}}

Official answer

Option 2

NTA final key.

Chapter
Work, Energy and Power
Topic
Center of Mass
Idea tested
COM of Two-Block Spring System

Same topic in other shifts

All Center of Mass questions
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  5. 4 Apr 2024, Shift 2 · Q58In a system two particles of masses m1m_1= 3 kgkg and m2m_2 = 2 kgkg are placed at certain distance from each other. The particle of mass…EasyNumerical value
  6. 8 Apr 2024, Shift 1 · Q52A uniform thin metal plate of mass 10 kg with dimensions is shown. The ratio of xx and yy coordinates of center of mass of plate in…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.