A disc of radius `R` is rolling purely on a flat horizontal, with a Constant angular velocity. The angle between the of velocity and acceleration vectors point `P` is given by `sin^(-1) (sqrt2//n)`. What is the value of `n`?

Answer

2

Explanation

The required angle is `45^@` so `(sqrt(2))/n=1/(sqrt(2))impliesn=2`