Physics - NLM Question with Solution | TestHub

A rat is running on ice with speed$v=\pi \mathrm{m} {\mathrm{s}}^{-1}$. Suddenly he decides to turn by$90°$and want to keep running with the same speed throughout. What is the least amount of time (in seconds) he needs for such a turn? Suppose that rat’s feet can move independently. Coefficient of friction between rat’s feet and ice is$0.125$. (Given:${\pi }^2=g$)