A-Level Physics OCR A H556

Kepler’s three laws of planetary motion

the centripetal force on a planet is provided by the gravitational force between it and the Sun

the equation $T^2 = \bigg(\dfrac{4π^2}{GM}\bigg)r^3$

*Learners will also be expected to derive this equation from first principles. *

the relationship for Kepler’s third law $T^2 ∝ r^3$ applied to systems other than our solar system

geostationary orbit; uses of geostationary satellites.