Indian Navy Pilot Systems of Particles and Rotational Motion — practice questions

Explore 2 free Systems of Particles and Rotational Motion questions in Indian Navy Pilot Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Systems of Particles and Rotational Motion questions and exercises with answers

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A wheel starting from rest reaches 20 rad/s in 4 s. Angular acceleration alpha:Read the answer and worked solution →As per your syllabus, if F_ext on the system is zero, the total linear momentum of the system does which?Read the answer and worked solution →

Worked practice questions

A wheel starting from rest reaches 20 rad/s in 4 s. Angular acceleration alpha:

2 rad/s²
80 rad/s²
1 rad/s²
5 rad/s²

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Correct answer: D. 5 rad/s²

We have alpha = (omega - omega0)/t. That is alpha = (20 - 0)/4. So alpha = 5 rad/s².

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As per your syllabus, if F_ext on the system is zero, the total linear momentum of the system does which?

Oscillates over time periodically
Stays constant (is conserved)
Always increases steadily
Always decreases steadily

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Correct answer: B. Stays constant (is conserved)

Your syllabus: F_ext = 0 ⇒ dP/dt = 0 ⇒ P conserved. Underlies many isolated-system problems.