A mass of 400 g

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Energy and Momentum of Rotating Systems · Energy and Momentum of Rotating Systems

Problem

A mass of 400 g, attached to a light string of length 60 cm, follows a circular path that takes 0.5 s for one complete revolution. The angular momentum of the mass-string system is (1) 0.29 kgm2s−10.29 \text{ kgm}^2\text{s}^{-1} . (2) 0.48 kgm2s−10.48 \text{ kgm}^2\text{s}^{-1} . (3) 0.90 kgm2s−10.90 \text{ kgm}^2\text{s}^{-1} . (4) 1.8 kgm2s−11.8 \text{ kgm}^2\text{s}^{-1} .

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