A puck of mass is located on the positive -axis a distance from the origin

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

Problem

A puck of mass

m

is located on the positive

x

-axis a distance

d

from the origin

O

. The puck’s velocity makes an angle

\theta

with the positive

x

-axis. For which of the following values of

\theta

is the puck’s angular momentum about

O

equal to zero at that instant? (a)

90^{\circ}

(b)

60^{\circ}

(c)

0^{\circ}

(d)

30^{\circ}