Which of the following expresses the magnitude of the angular momentum of a point…

PHYSICS · Single correct · AP · Physics C: Mechanics · Energy and Momentum of Rotating Systems · Energy and Momentum of Rotating Systems

Problem

Which of the following expresses the magnitude of the angular momentum

L

of a point mass

m

moving with speed

v

along a straight-line path a distance

r

from a reference point, where

\theta

is the angle between the velocity and the line from the reference point to the mass? (a)

L = m v r

(b)

L = m v r \sin \theta

(c)

L = \dfrac{1}{2} m v r \sin \theta

(d)

L = m v r \cos \theta