Planet P orbits a star at a radius four times larger than that of planet Q

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Energy and Momentum of Rotating Systems · Energy and Momentum of Rotating Systems

Problem

Planet P orbits a star at a radius four times larger than that of planet Q. If planet Q completes one revolution in

20\,\text{days}

, the time taken by planet P for one revolution will be (a)

80\,\text{days}

(b)

160\,\text{days}

(c)

320\,\text{days}

(d)

120\,\text{days}