Two cars of masses m1​ and m2​ are moving in circles of radii r1​ and r2​, respectively. Their speeds are such that they make complete circles in the same time t. The ratio of their centripetal acceleration is
As their period of revolution is same, so their angular speed is also same. Centripetal acceleration is circular path, a=ω2r.Thus,a2​a1​​=ω2r2​ω2r1​​=r2​r1​​