Angular momentum of a rotating mass calculation

Practice question

Question

A 1kg mass rotates in a circle of radius 0.5m with a speed of 4m/s. What is its angular momentum about the center?

Options

Choose one · Correct answer highlighted

1 kg m²/s 2 kg m²/s Correct 3 kg m²/s 4 kg m²/s

Explanation

L = mvr. m = 1kg, v = 4m/s, r = 0.5m. L = 1×4×0.5 = 2kg m2/s. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 2 kg m²/s. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.

Share this question

Discussion

Comments

0 comments

Please log in to join the discussion.

No comments yet. Be the first to start the discussion.

Related blogs

Guides and insights connected to this topic

NCERT 12 Zoology 06 Sep 2026

Biodiversity and Conservation Biology Notes - Levels, Patterns, Loss, Conservation, Hotspots and Protected Areas

Learn about biodiversity levels, patterns, loss, conservation strategies, hotspots and protected areas, with examples from India.

NCERT 12 Zoology 06 Sep 2026

Human Health and Diseases Biology Notes - Common Diseases, Immunity, AIDS, Cancer, Drugs and Adolescence

Overview of common diseases, immune system basics, AIDS, cancer, drug effects and health considerations for adolescents.

NCERT 12 Zoology 06 Sep 2026

Molecular Basis of Inheritance Biology Notes - DNA Structure, Replication, Transcription, Genetic Code, Human Genome and DNA Fingerprinting

Notes on DNA’s double helix, replication steps, transcription process, genetic code, human genome and DNA fingerprinting.