A certain planet is a uniform sphere of mass M and radius R of 5.1 x 10^6 m. State an expression, in terms of M and R, for the gravitational field strength at the surface of the planet. State the name of any other symbol you may use.
The gravitational field strength at the surface of the planet can be expressed as:
g = G * (M / R^2)
where:
g is the gravitational field strength
G is the gravitational constant (6.67430 × 10^-11 N m^2/kg^2)
M is the mass of the planet
R is the radius of the planet