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WorksheetsUniversal Gravitation and Circular Motion Review
Total questions: 25
Worksheet time: 13mins
What happens to Gravitational force if I double both of the masses but don't change their distance?
doubles
half as big
4 times bigger
41 as much or 4 time smaller
Check all the true statements about the Law of Universal Gravitation.
All objects in the universe attract all other objects in the universe.
The force of attraction increases when mass(es) increase.
The force of attraction decreases when the distance between the masses increases.
Gravity can either attract or repel.
Check all that are true about the Earth and the moon.
The Earth's pull on the moon is greater than the moon's pull on the Earth because the Earth is bigger.
Mass on the moon is the same as mass on the Earth.
Weight on the moon is the same as weight on the Earth.
If gravity were to disappear, the moon would fly out into space.
According to the Law of Universal Gravitation, mass and the gravitational force are
indirectly proportional
directly proportional
not related at all
-10 m/s/s
According to the Law of Universal Gravitation, the distance between 2 objects and the gravitational force are
indirectly proportional
directly proportional
not related at all
-10 m/s/s
If the Earth's mass suddenly tripled but the radius remained the same, what would happen to your weight?
It would also triple
It would be reduced by 1/3
it would be reduced by 1/9
It would remain the same
If the mass of either m1 or m2 is increased then the force of gravitation between them will...
increase
decrease
stay the same
If the distance between 2 masses is increased then the force of gravitation between them will...
increase
decrease
stay the same
If the mass of either m1 or m2 is decreased then the force of gravitation between them will...
increase
decrease
stay the same
If the distance between 2 masses is decreased then the force of gravitation between them will...
increase
decrease
stay the same
Which pair of masses will have the greatest gravitational force of attraction between them?
top pair because they have the greatest masses and are closer together
middle pair, because they are closer together
bottom pair because they have the greatest masses and are further apart
all have the same Fg
A car traveling at a constant 45 mph going around a curve is accelerating because
it is getting faster
it is getting slower
it is changing directions
it is not accelerating if it has a constant speed
What is the direction of the velocity for the car? Notice it is traveling counterclockwise.
to the right >
to the left <
upwards ^
downwards v
What is the direction of the centripetal acceleration for the car? Notice it is traveling counterclockwise.
to the right >
to the left <
upwards ^
downwards v
What is the direction of the centripetal force for the car? Notice it is traveling counterclockwise.
to the right >
to the left <
upwards ^
downwards v
The car is travelling at a constant speed. If the car hits a patch of ice, what direction will it skid? Notice it is traveling counterclockwise.
to the right >
to the left <
upwards ^
downwards v
What is the direction of the centripetal acceleration?
What is the direction of the instantaneous velocity?
According to Newton's 2nd Law, if we double the force on a mass, the acceleration on the mass will
also double (multiplied by 2)
quadruple (multiplied by 4)
become half (multiplied by 1/2)
be reduced by 1/4 (multiplied by 1/4)
Which is true?
the inside horse goes faster because it has a larger radius
the inside horse goes slower because it has a larger radius
the outside horse goes faster because it has a larger radius
the outside horse goes slower because it has a larger radius
Which statement is true about the forces one feels on this ride?
the wall pushes you toward the center of the circle so it is the Fc
the wall pushes you away from the center of the circle so it is the Fc
your inertia feels like a centrifugal force pushing you away from the center of the circle
your inertia is a centrifugal force pushing you away from the center of the circle
What type of force acts like the centripetal force when a car goes around a curve?
FN
Ff
FT
it's not a force, it's inertia
What type of force acts like the centripetal force when the moon orbits the Earth?
FN
Ff
FT
Fg
What type of force acts like the centripetal force when a ball swings in a circle on a string?
FN
Ff
FT
Fg
What type of force acts like the centripetal force when a motorcycle travels around the wall of death?
FN
Ff
FT
Fg
