You have the mass of the planet--that's all you need. Use the equation from your first post.cary5 said:Fg=G*m*m/r sqd
but that does not give me g and besids i need 2 masses for this
Doc Al said:You have the mass of the planet--that's all you need. Use the equation from your first post.
No. Write the force of gravity on some mass m as:cary5 said:Fnet/5*1o^23=a ?
now i have 2 varabls
Doc Al said:No. Write the force of gravity on some mass m as:
Fg = G*M*m/r^2
where M is the mass of the planet
The acceleration due to gravity is Fg/m.
Sounds good to me. So what's the acceleration due to gravity?cary5 said:Fg=(6.67*10^-11)(5.00*10^23)(m)/(3.00*10^7)^2
=0.037m
Doc Al said:Sounds good to me. So what's the acceleration due to gravity?
No. Go back to post #6. a = Fg/m (not Fg/M)cary5 said:0.037m/5.0*10^23
=(7.4*10^-26)m
cary5 said:What is the acceleration due to gravity on the surface of a planet with mass 5.00 x 1023 kg and radius 3.00 x 107 m? If you need to, suppose that a block of mass 50 kg is at rest on the surface. Why does it not matter what the mass of the block is?a= Fnet/massi don't know the Fnet
barthayn said:Acceleration due to gravity is the same as the force of gravity for a 1 kg mass. For example, Earth's acceleration due to gravity is 9.8 m/s/s while its force for a one kg mass is 9.8 N. From this you can assume the second mass needed is one kg.
This allows you to use Newton's Universal Law of Gravity to isolate for Fg. If you used the second mass of the object as one, it should be the same for the acceleration due to gravity on that planet.
The force of gravity is the attractive force between two objects with mass. It is what keeps objects on the Earth's surface and keeps planets in orbit around the sun.
The force of gravity is calculated using the formula F = G(m1m2)/r^2, where G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between their centers of mass.
Yes, the force of gravity varies on different planets depending on their mass and radius. The larger the mass and radius of a planet, the stronger the force of gravity will be.
No, the force of gravity cannot be canceled or nullified. It is a fundamental force of nature and is always present between objects with mass.
The force of gravity decreases as altitude increases. This is because as an object moves farther away from the center of the Earth, the distance between it and the Earth's center increases, decreasing the force of gravity acting on it.