Physics

Problem

Three stones P, Q and R move in separate horizontal circular paths. Their speeds and radii are: P:

v=4\,\text{m\,s}^{-1},\; r=2\,\text{m}

v=3\,\text{m\,s}^{-1},\; r=1\,\text{m}

v=5\,\text{m\,s}^{-1},\; r=4\,\text{m}

Arrange the stones in the order of increasing centripetal acceleration. a) Q < P < R b) P < Q < R c) R < P < Q d) P < R < Q