CONSTANT SPEED CIRCLES
The type of force dealt with in this case.
CENTRIPETAL
This word describes the gravitational force acting upon an object.
WEIGHT
The acceleration of gravity experienced by objects near the Earth’s surface is influenced most strongly by this value.
EARTH'S MASS
This term always accurately describes a satellite.
PROJECTILE
Name all forces that act upon the planets.
GRAVITY
Two objects attract each other with a force of gravity of 72 N. If the distance separating the objects is tripled and the masses of one of the objects is doubled, then what is the new force of gravitational attraction?
16 N
(72 * 2 / 32)
When the net force on the object is reduced to zero, this word describes the new path it would take.
TANGENT
If object A attracts object B gravitationally with a force of X newtons, how much does object B attract object A by?
X NEWTONS
Increasing the mass of an object on Earth will influence its gravitational acceleration by this much.
NONE
What two terms describe the path of all satellites, being either one or the other?
CIRCULAR
ELLIPTICAL
What is the net force vector on a planet always directed towards?
WHAT IT ORBITS
If the mass of Uranus is 8.681 x 1025 kg and its radius is 24,973 km, find its orbital velocity.
15,230 m/s
(v = SQRT((6.67 x 10-11 * 8.681 x 1025 kg) / 24,973,000 m)
The net force on the object and this value as well will always be pointed in the same direction.
ACCELERATION
Doubling the separation distance between two objects will affect the gravitational force between the objects by this much.
ONE-FOURTH
If earth’s mass were suddenly doubled, what would the new value of gravitational acceleration approximately be?
20 m/s2
At what point in a satellite’s journey does it move the fastest?
WHEN CLOSEST TO WHAT IT ORBITS
Which planet in our solar system has the greatest period?
NEPTUNE
What is the acceleration of a piece of dust on a record album that is 13.0 cm from the center, if the record is spinning at 37.0 rpm?
1.95 m/s/s
(find v by 37.0*2*PI*.130 m/60 s = 0.504 m/s, then do v2/R = .5042/.13 m)
A force can push outwards on this object and it can remain in motion so long as ___ is still directed inwards.
NET FORCE
The gravitational force between an object and the earth is ___ related to the distance between the object’s and the earth’s center.
INVERSELY
If the mass of earth were to suddenly double, how much would the radius of earth have to increase by to restore its original gravitational value?
1.41 TIMES
sqrt(2)
Acceleration of a satellite varies _______________ with its distance from the center of the Earth.
INVERSELY
Fill in the following statement with the terms circular and elliptical:
The trajectories of the planets are highly ___ and only slightly ___.
CIRCULAR, ELLIPTICAL
What is the reading of a bathroom scale when a man of mass 82 kg stands on it while riding in an elevator accelerating upwards at 5.2 m/s2?
1200 N
(Fnorm = Fnet + Fgrav, 82*5.2 + 82*9.8)
The force that this object experiences would be directed in this direction compared to its motion.
PERPENDICULAR (INWARD)
This value can always be accurately calculated by multiplying these two values.
OBJECT MASS and ACCELERATION OF GRAVITY (mg)
How much does a satellite orbiting a planetary body accelerate by?
THE ACCELERATION OF GRAVITY AT THAT PARTICULAR LOCATION
A greater orbital speed is required by a satellite at this relative altitude level.
LOW
When is the net force vector on a planet the greatest?
WHEN CLOSEST TO ITS ORBITING STAR
What is the period rotation of Mars in earth years if it is a distance of 2.279 x 1011 meters from the sun, while Earth is itself merely 1.5 x 1011 meters from the sun?
1.9 EARTH YEARS
(T2/R3 = T2/R3 = 1 year2 / 1.5 x 1011 m3 = x2 / 2.279 x 1011 m3)