Choose the correct alternatives :

Options

A. For a general rotational motion, angular momentum `L` and angular velocity `omega` need not be parallel.
B. For a rotational motion about a fixed axis, angular momentum `L` and angualr velocity `omega` are always parallel.
C. For a general translational motion, mometum `p` and velocity `v` are always parallel.
D. For a general translational motion, acceleration a and velocity v are always parallel.

Answer

A,C

Explanation

From the study of theory, we know that for general rotational motion, angualr momentum `overset rarr(L)` and angular velocity `overset rarr(omega)` need not be parallel.
Again, for a general translation motion, linear momentum `overset rarr(p)` and linear velocity `overset rarr(v)` are always parallel.
This is because `overset rarr(p)` is directed along `overset rarr(v)` only.