Q. A homogeneous disc of mass $2\ kg$ and radius $15\ cm$ is rotating about its axis (which is fixed) with an angular velocity of $4\ radian/s$. The linear momentum of the disc is
A) $1.2\ kg$-$m/s$
B) $1.0\ kg$-$m/s$
C) $0.6\ kg$-$m/s$
D) None of the above
Explanation
(d) Since $v_{C.M.} = 0$ so it’s linear momentum = 0
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.