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WorksheetsUCM & Gravity
Total questions: 27
Worksheet time: 1hrs 21mins
Which of the following FBD is correct for the car at point A?
Which force(s) act(s) as the centripetal force at point B?
Fn
Fg
Fc
Fn - Fg
The derived equation for the minimum velocity at the top of the loop at point C is...
When in a car without your seat belt on, you feel you are flung to the side of the car due to the _____ effect when in fact you are _____ and will not turn until ____ applies a _____ force on you.
centripetal, sliding, the door, centrifugal
inertial, sliding, centripetal, center
centrifugal, going straight, the door, centripetal
centripetal, going straight, the door, centrifugal
If the mass, velocity, and radius are all doubled, what would be the effect on the centripetal acceleration?
1/2 the size
the same
2 x larger
4 x larger
In what direction is the car accelerating?
Which force(s) act(s) as the centripetal force on the car?
Fc
Ff
Fn
Fn + Ff
Which of the following would not be accelerating?
A planet in orbit
A thrown ball in the air
A car driving down a straight road
Driving a constant speed through a corner.
The string breaks while the ball is at point 1. What path does the ball take?
The 5 N ball travels at 4 m/s when at the top of a vertical circle made by a 1 m long string. Find the tension in the string.
3 N
8 N
16 N
80 N
At what point would the string most likely break?
at the top
on the way down
at the bottom
on the way up
Two beads are placed on a rod so that B is twice as far from the pivot as A. What is the ratio of the velocity of B to A?
1 / 1
1.41 / 1
2 / 1
4 / 1
If bead A has 4 x the mass of bead B, where would you need to place bead B so that it experiences the same force?
rB = 1.41 rA
rB = 2 rA
rB = 4 rA
rB = 16 rA
The rider feels pushed out of the ride when really the _____ force is making her _____ .
friction, turn
normal, stay up
normal, turn
centripetal, stay up
The minimum velocity of this ride is dependent on (select all correct answers)
m
g
μ
r
The minimum speed of this ride is...
2.7 m/s
3.9 m/s
5.5 m/s
30 m/s
A flying cow (All the farm animals fly!) is used to repeat our experiment from class. What is the correct FBD for the cow?
If the cow has a mass of 0.4 kg, the net centripetal force is most likely...
4 N
7.5 N
8.5 N
cannot be found without the velocity.
To get the cow to fly completely horizontal, it would need to travel at a speed of...
1.2 m/s
1.8 m/s
180 m/s
not possible, the string will always dip into a conical pendulum
The orbital velocity equation can be derived from which of the following equalities?
The satellite is replaced with one that has 4 x the mass. The velocity of this new satellite will be...
1/2 that of the original
The same as the original
2 x the original
4 x the original
The satellite is now placed into a orbit with 1/4 the velocity as before. The radius of this orbit will be...
the same as before
2 x larger
4 x larger
16 x larger
Four satellites orbit the Earth. Identify the two with the same orbital period.
A
B
C
D
Four satellites orbit the Earth. Identify the two experiencing the same force of gravity.
A
B
C
D
Four satellites orbit the Earth. Identify the two experiencing the same acceleration due to gravity.
A
B
C
D
While on the Moon, Alan Shephard could have hit a golf ball for miles! Choose the two statements that are true.
The acceleration of gravity is less on the Moon.
The mass of the ball is less on the Moon.
The weight of the ball is less on the Moon.
The force he can apply is greater on the Moon.
The golf ball experiences an acceleration on the Moon that is 1/7 of the acceleration on Earth. If the radius of the Moon is approximately 1/4 that of Earth, what is the mass of the Moon compared to Earth?
4/7 MEarth
7/16 MEarth
1/28 MEarth
1/112 MEarth
