JEE Main 2014PhysicsRotational MotionMediumMCQ

JEE Main 2014 — Rotational Motion Question with Solution

JEE Main 2014 (19 Apr Online)

Question

A ball of mass 160 g is thrown up at an angle of 60° to the horizontal at a speed of 10 m s-1. The angular momentum of the ball at the highest point of the trajectory with respect to the point from which the ball is thrown is nearly g=10 m s-2

Choose an option

Show full solutionCorrect option: C
Correct answer
C3.0 kg m2 s-1

Step-by-step explanation



The angular momentum L→=r→×p→

At maximum height angular momentum about O,

L=m vcosθ H

=mvcosθ×u2sin2θ2g        for horizontal v=u

=mu3sin260°cos60°2g

=3 kg m2 s-1

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About this question

This is a previous-year question from JEE Main 2014, covering the Rotational Motion chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.