JEE Advanced Systems of Particles and Rotational Motion: related Physics practice

The practice bank below covers broader Physics topics; a dedicated Systems of Particles and Rotational Motion lesson is not available yet.

Physics questions and exercises with answers

Showing questions 1–2 of 2.

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Steps

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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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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