A satellite is in a circular orbit at a height h h\,h above the surface of a planet of mass M M\,M and radius RRR. What is the orbital period T T\,T of the satellite?
2πGM(R+h)32\pi \sqrt{\frac{GM}{(R+h)^3}}2π(R+h)3GM
2πR+hGM2\pi \sqrt{\frac{R+h}{GM}}2πGMR+h
2π(R+h)3GM2\pi \sqrt{\frac{(R+h)^3}{GM}}2πGM(R+h)3
2πR+hGM2\pi \frac{R+h}{GM}2πGMR+h
52 exam-style questions on AQA A Level Physics Gravitational fields (A-level only), covering Newton's law (A-level only), Gravitational field strength (A-level only), Gravitational potential (A-level only), and Orbits of planets and satellites (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.