JEE Advanced Rotational Motion — practice questions

Explore 2 free Rotational Motion questions in JEE Advanced Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Rotational Motion questions and exercises with answers

Showing questions 1–2 of 2.

Race four rolling bodies downhillRead the answer and worked solution →Follow a spinning skater's energyRead the answer and worked solution →

Worked practice questions

Race four rolling bodies downhill

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Steps

Solid sphere
Solid cylinder
Hollow sphere
Hoop

Instructions

Tap the four rolling bodies in the order they reach the foot of the same incline, fastest first.

_Source: Qallery verified question bank, JEE Advanced, topic Rotational Motion_

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Follow a spinning skater's energy

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Questions

Answer
18
Question
A skater spins at 3 rad/s with moment of inertia 4 kg m squared. Her kinetic energy in joules?
Answer
72
Question
She pulls her arms in to 1 kg m squared, conserving angular momentum. Her kinetic energy now, in joules?
Answer
54
Question
How many joules did her own muscles supply while she pulled her arms in?

Instructions

Key in each energy for the spinning skater as a whole number of joules.

_Source: Qallery verified question bank, JEE Advanced, topic Rotational Motion_

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