Law of Universal Gravitation
The strength of the gravitational force depends on (2 things):
Mass of both objects and the distance between the centers of the objects
The formula for solving for the gravitational field is...
g = GM/r2
What factor affects an object's ability to stay in orbit?
Tangential Velocity
What is the formula for solving for gravitational force?
What is the unit for "g"?
m/s2
For an object to be in a stable circular orbit, it must have an acceleration which is:
Perpendicular to its orbit
If the mass of the object(s) increases, what happens to the gravitational force?
Force increases
What happens to the gravitational field if the distance from the center of the object doubles?
It decreases by 1/4
Determine the velocity, both magnitude and direction, of an object orbiting at a distance of 7.3 x 108 m from the center of a spherical object whose mass is 3.0 x 1027 kg.
v = 17,000 m/s tangent to the path
What is the magnitude of the gravitational force acting on a 6.0 × 1024 kg object, which is 3.8 x 108 m from a 7.3 x 1022 kg object?
F = 2.0 x 1020 N
What is the surface gravity of Earth when its mass is 6.0 x 1024 kg, and radius is 6.4 x 106 m?
A satellite A has twice the mass of satellite B. The satellites orbit a planet with the same orbital radius. The orbital velocity of the satellite A compared to B is:
The same
They are inversely proportional
Compute g for the surface of a planet whose radius is double that of the Earth and whose mass is triple that of Earth.
g = 7.3 m/s2
Satellite A has twice the mass of Satellite B. The satellites orbit the planet at the same orbital radius. The orbital period of satellite A compared to satellite B is:
The Same