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Saturday, 31 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 28 June 2022, Shift 1, Physics Q51

Question 51 of 90 in this shift, Physics question 21 of 30, Section B.

A pendulum is suspended by a string of length 250 cm. The mass of the bob of the pendulum is 200 g. The bob is pulled aside until the string is at 60°60° with vertical as shown in the figure. After releasing the bob, the maximum velocity attained by the bob will be ________ ms−1\mathrm{ms^{-1}}. (if g = 10 m/s2^2)

The figure, in words

A pendulum hanging from a ceiling by a string labelled l = 250 cm; the string is shown vertical and also pulled aside to an angle of 60° from the vertical, with a bob at each position and a dashed arc between them.

Official answer

5

NTA final key.

Chapter
Work, Energy and Power
Topic
Work and Kinetic Energy
Idea tested
Conservation of Mechanical Energy

Same idea in other shifts

Asked 7× in all
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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.