Define centripetal acceleration derive an expression for it./What is centripetal acceleration derive an expression for it.
Centripetal acceleration is the acceleration of a body that is travelling across a circular path. When a body undergoes a circular motion, its direction constantly changes and thus its velocity changes (velocity is a vector quantity) which produces an acceleration.Derivation:
We can rewrite this as:
Substituting the value of
$a=\frac{m v^2}{r} \div m$
Thus, the centripetal acceleration is given by