JEE Main 2021 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 18 March 2021, Shift 2, Physics Q24

Question 24 of 90 in this shift, Physics question 24 of 30, Section B.

A ball of mass 4 kg, moving with a velocity of 10 ms

^{-1}

, collides with a spring of length 8 m and force constant 100 Nm

^{-1}

. The length of the compressed spring is

x

m. The value of

x

, to the nearest integer, is _________.

Official answer

NTA final key.

Chapter: Work, Energy and Power
Topic: Work and Kinetic Energy
Idea tested: Maximum Compression of a Spring

Same idea in other shifts

Asked 4× in all

8 Apr 2024, Shift 2 · Q34A block is simply released from the top of an inclined plane as shown in the figure above. The maximum compression in the spring when the…MediumDiagram basedHas a figure
28 Jul 2022, Shift 1 · Q59A block of mass 'm' (as shown in figure) moving with kinetic energy E compresses a spring through a distance 25 cm when, its speed is…MediumNumerical valueHas a figure
24 Jun 2022, Shift 1 · Q58A ball of mass 100 g is dropped from a height $h=10$ cm on a platform fixed at the top of a vertical spring (as shown in figure). The ball…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. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.