Why do other planets have different acceleration die to gravity?

Question

please explain.

Answer 1

The force acting on a body on a planet's surface, due to gravity is calculated using the equation:

F = G*m1*m2/r²

From this equation you can see that, compared to earth, if the mass of the planet is greater than that of the earth, F will increase. If the planet has a larger diameter than the earth, then F will decrease in proportion to the square of the radius of the planet. The converse will naturally apply.

Answer 2

acceleration DUE to gravity, g=-Gm/r^2

G is gravitational constant, m is mass of planet, and r is distance of the object from the planets centre. so 'g' will vary according to all these factors except G(as it is a CONSTANT)

Answer 3

the Fg on other planets is determined by the universal law of gravatation.  This is given by Fg=G(m1*m2)/r^2 where G is the universal gravatational constant(a constant given by derived equations and calculations) m is the mass of each object in question and r is the radius between the two.  SO as you can see if you increase one mass either the person or planet you have a greater Fg, or acceleration of gravity.

Answer 4

other planets have different acceleration of gravity because they have different masses and different radii(that is just plural for radius) according to the law of gravitation they would have different F(g) if their radius and mass was different

Force of gravity=GMm/d^2

G=6.67*10^-11 dyne

M=mass of planet

m=mass of person

d=distance

Answer 5

To be honest, I'm no physicist neither am I a wiz. But here's how I understand gravity (putting the math equations aside):

Your planet has a large mass which is a spherical combination of a gazillion and more atoms. As the planet turns on itself, each atom wants to move away from the planet as a result of G force.

Now, all the atoms on this mass (the planet) have a link to each other by either exchanging or sharing electrons. Therefore, atoms in the planet are all pulling on each other from the center of the planet to maintain this link. A force field around this effect accumulates up to the surface of the mass. This force field is gravity and will pull on anything near the surface that contains atoms.

A different planet mass combined with a different rotation speed will change the gravity :)

Answer 6

Acceleration due to gravity (g) of a given planet (or any mass) depends on its radius and mass. This g is derived from:

F = Gm1m2 / r^2   (equation for gravitational force, G = 6.67x10^-11)

Just remove the m2, and you'll get the equation for finding g.