Let $\mathop A\limits^ \to $ be a unit vector along the axis of rotation of a purely rotating body and $\mathop B\limits^ \to $ be a unit vector along the velocity of a particle $ P$ of the body away from the axis. The value of $\mathop A\limits^ \to .\mathop B\limits^ \to $ is
$1$
$-1$
$0$
None of these
Obtain Newton's second law for system of particle and write it.
What is rigid body ? Explain rigid body.
Difference between rigid body and solid body.
In motion of spinning top at any one place, whether the point in spinning top remains stationary or line remains stationary?
What is pure translational motion ?