Three stones P, Q and R move in separate horizontal circular paths

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

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