5 pt.
5 pt.
5 pt.
5 pt.
5 pt.
10 pt.
10 pt.
10 pt.
10 pt.
10 pt.
15 pt.
15 pt.
15 pt.
15 pt.
15 pt.
20 pt.
20 pt.
20 pt.
20 pt.
20 pt.
25 pt.
25 pt.
25 pt.
25 pt.
25 pt.
1-5
What is the value of G?
1-5A
What is the value of G?
6.67 x 10-11 Nm2/kg2
1-10
What is the formula for Newton’s
law of gravitation?
1-10A
What is the formula for Newton’s
law of gravitation?
F = Gm1m2 / r2
1-15
If the mass of a planet is doubled,
and the radius is doubled, what
happens to the force of gravity?
1-15A
If the mass of a planet is doubled,
and the radius is doubled, what
happens to the force of gravity?
The gravitational force is
halved.
1-20
What is the gravitational force
between two planetoids if each has a
mass of 500,000,000kg and their
centers of mass are 200km apart?
1-20A
What is the gravitational force
between two planetoids if each has a
mass of 500,000,000kg and their
centers of mass are 200km apart?
F = Gm1m2 / r2
F = 6.67x10-11*500,000,0002 / 200,0002
F=
-4
4.17x10
N
1-25
If the gravitational force
between two spaceships is
5x10-10 N, and each ship has a mass of 2000kg, how
far apart are the spaceships?
(measured CM to CM)
1-25A
If the gravitational force
between two spaceships is
5x10-10 N, and each ship has a mass of 2000kg, how
far apart are the spaceships?
(measured CM to CM)
F = Gm1m2 / r2
r = sqrt(Gm1m2 / F)
731 m
2-5
What force causes an object
to move in a circular path?
2-5A
What force causes an object
to move in a circular path?
Centripetal
(-20 pts if you write Centrifugal!)
2-10
What is the formula for
Centripetal Acceleration?
2-10A
What is the formula for
Centripetal Acceleration?
ac = v2 / r
2-15
If a 0.5 kg ball spins on a table at
12m/s, attached to a 1m string, what is
the tension on the string?
2-15A
If a 0.5 kg ball spins on a table at
12m/s, attached to a 1m string, what is
the tension on the string?
F = mv2 / r
2
F = 0.5*12 / 1
F = 72 N
If a 5 kg bowling ball 2-20
is spun vertically at 24m/s,
attached to a 0.5m rope, what is the tension on the
rope at the bottom of the circle?
If a 5 kg bowling ball2-20A
is spun vertically at 24m/s,
attached to a 0.5m rope, what is the tension on the
rope at the bottom of the circle?
Ft - Fg = mv2 / r
Ft = 5*242 / .5 +5*9.8
F = 5809 N
Ft
Fg
2-25
Type question here.
Adjust size & position
as necessary.
2-25A
In a carnival ride which spins you in a vertical
circle, how fast must it spin for you to feel
weightless at the top if it has a radius of 2m?
Fg + Fn = mv2 / r
Fn = 0
mg = mv2 / 2
Sqrt(2g) = v
v = 4.43m/s
3-5
A planet orbits its sun, when the sun is
suddenly stolen by aliens. Which path
does the planet follow?
4
3
2
1
3-5A
A planet orbits its sun, when the sun is
suddenly stolen by aliens. Which path
does the planet follow?
4
Path #3
3
2
1
3-10
What causes the seasons on
planet Earth?
3-10A
What causes the seasons on
planet Earth?
Planetary
Tilt
3-15
If the Sun is at one of the focal points
of Haley’s comet, what is at the other
focal point?
3-15A
If the Sun is at one of the focal points
of Haley’s comet, what is at the other
focal point?
Nothing
Empty space
3-20
What is Kepler’s 3rd Law?
3-20A
What is Kepler’s 3rd Law?
Ra3/Ta2 = Rb3/Tb2
Formula relating the orbital radii
and periods of different objects
orbiting the same body
3-25
If one moon orbits a planet at a radius of
400,000 km, and has a period of 30 days,
how long will it take a moon to orbit the
planet at half the radius?
3-25A
If one moon orbits a planet at a radius of
400,000 km, and has a period of 30 days,
how long will it take a moon to orbit the
planet at half the radius?
Ra3/Ta2 = Rb3/Tb2
400,0003/302 = 200,0003/Tb2
T = 10.6 days
4-5
Draw a free body diagram for an
object on a table top spinning in a
circle because it’s tied to a string
4-5A
Draw a free body diagram for an
object on a table top spinning in a
circle because it’s tied to a string
Ft
FN
or
Fg
FT
4-10
Draw a free body diagram for an
object at the top of a circular path
because it’s tied to a string.
4-10A
Draw a free body diagram for an
object at the top of a circular path
because it’s tied to a string.
FG FT
4-15 diagram for a
Draw a free body
person on a roller coaster at the
bottom of a loop.
4-15A diagram for a
Draw a free body
person on a roller coaster at the
bottom of a loop.
FN
FG
4-20
Draw a free body diagram for an object
spun on a string in a vertical circle, at the
time the object is on its way directly
downward.
4-20A
Draw a free body diagram for an object
spun on a string in a vertical circle, at the
time the object is on its way directly
downward.
FT
FG
4-25
Draw a complete free body diagram for a
car driving in a circle around a flat track.
4-25A
Draw a complete free body diagram for a
car driving in a circle around a flat track.
FN
Ff
FG
5-5
Among the land animals, what
animal has the longest tail?
5-5A
The Giraffe
It can be up to 8’ long!
5-10
Name the Seven Dwarves
(in alphabetic order)
Bashful
Doc
Dopey
Grumpy
Happy
Sleepy
Sneezy
5-10A
5-15
What is the Harlem
Globetrotter’s theme-song?
5-15A
5-20 categories of
Name the three
fencing blades.
5-20A
Epee
Saber
Foil
5-25
Identify these three
cereal characters.
5-25A
Daily Double
In a carnival ride which spins you in a vertical
circle, how fast must it spin for you to feel
weightless at the top if it has a radius of 2m?