MCQ
A small mass $m$ is attached to a massless string whose other end is fixed at $P$ as shown in figure. The mass is undergoing circular motion in $x-y$ plane with centre $O$ and constant angular speed $\omega $ . If the angular momentum of the system, calculated about $O$ and $P$ and denoted by $\vec L_o$ and $\vec L_p$ respectively, then
- A${\vec L_o}$ and ${\vec L_p}$ do not vary with time
- B${\vec L_o}$ varies with time while ${\vec L_p}$ remains constant
- ✓${\vec L_o}$ remains constant while ${\vec L_p}$ varies with time.
- D${\vec L_o}$ and ${\vec L_p}$ both vary with time
