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WorksheetsUniversal Law of Gravitation
Total questions: 26
Worksheet time: 29mins
What does the variable G in the gravitational force equation represent? Fg = G r2m1 m2
Universal gravitational constant
Combined masses of the two objects
Gravitational force
Dielectric constant
Two spherical objects have masses of 8000 kg and 1500 kg. Their centers are separated by a distance of 1.5 m. Find the gravitational attraction between them
5.4 X 10-4 N
1.2 X 107 N
3.6 X 10-4 N
5.33 N
What is the gravitational force between two identical 50,000 kg asteroids whose centers of mass are separated by 1000 m?
2500 N
3.3 x 10-12 N
1.67 x 10-4 N
1.67 x 10-7 N
Which configuration will result in the greatest gravitational force?
small masses far apart
large masses far apart
small masses close together
large masses close together
The space shuttle is orbiting the Earth clockwise. Which vector shows the direction of the gravitational force acting on the shuttle?
a
b
c
d
The space shuttle is orbiting the Earth clockwise. Which vector shows the direction of the shuttle's instantaneous velocity?
a
b
c
d
Which diagram best shows the gravitational interaction between Earth and a satellite?
Two satellites of equal mass are in circular orbit around a planet. Satellite b is twice as far out. Which feels a stronger gravitational force?
Satellite a
Satellite b
Both the same
Two satellites of equal mass are in circular orbit around a planet. Satellite b is twice as far out. How much stronger is the planet’s gravity on satellite a (compared to satellite b)?
2× as much
3× as much
4× as much
5× as much
Why do astronauts in this space shuttle feel weightless?
They are in free fall, at the same rate as the shuttle
There is an equal force pulling them away from Earth
The gravity at that distance is too small to feel
They pull on Earth as hard as it pulls on them
If you could go to the center of the Earth, how would your weight change?
increase a lot
increase slightly
stay the same
decrease slightly
become zero
You want to launch a satellite into Earth orbit. You already know Earth’s mass, and the satellite’s mass. What additional information do you need to calculate the gravitational force that will act on it?
The height it will have
The acceleration of gravity at the surface
Earth's distance from the Sun
The satellite's size
Why do objects experience centripetal acceleration even though they can have a constant speed?
Because they are speeding up as they move in a circle
Because they are constantly changing direction and hence, velocity changes, and that net change is directed inward.
Because they are constantly changing both speed and direction
Because when you have 100 people pedaling, you can speed up more easily.
