A small mass m is attached to a massless string whose other end is fixed at P as shown in the figure. The mass is undergoing circular motion in the x-y plane with centre at O and constant angular speed `omega`. If the angular momentum of the system. calculated about O and P are denoted. by `vecL_O and vecL_P` respectively, then.

Options

A. `vecL_(O)` and `vecL_(P)` do not vary with time
B. `vecL_(O)` varies with time while `vecL_(P)` remains constant.
C. `vecL_(O)` remains constant while `vecL_(P)` varies with time.
D. `vecL_(O)` and `vecL_(P)` both vary with time

Answer

C

Explanation

Direction of `vecL_(P)` will keep on changing