A 6 kg particle moves with velocity v = 3 j m/s at r = -4 i m . What is the magnitude of its angular momentum about the

Practice question

Question

A 6 kg particle moves with velocity v = 3 j m/s at r = -4 i m . What is the magnitude of its angular momentum about the origin?

Options

Choose one · Correct answer highlighted

10 kg m²/s 11 kg m²/s 12 kg m²/s Correct 13 kg m²/s

Explanation

Given: A 6 kg particle moves with velocity v = 3 j m/s at r = -4 i m . What is the magnitude of its angular momentum about the origin? Formula: L = r × p = beginvmatrix i & j & k -4 & 0 & 0 0 & 3 & 0 endvmatrix = k ((-4) × 3 - 0 × 0) = -12 k kg m²/s. Substitution & Calculation: Magnitude = 12 kg m²/s . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

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