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WorksheetsUCM & UG
Total questions: 50
Worksheet time: 1hrs 25mins
Which is an imaginary force?
Friction force
Normal force
centrifugal force
centripetal force
What causes acceleration during circular motion?
changing speed
changing direction
air resistance
magic
A 5.0kg bucket of water is swung in a circle with radius of 0.7m at a constant speed of 2.0m/s. The magnitude of the centripetal force on the bucket of water is approximately
5.7N
14N
29N
200N
A 5.0kg bucket of water is swung in a circle with radius of 0.7m at a constant speed of 2.0m/s. The magnitude of the centripetal acceleration on the bucket of water is approximately
5.7m/s2
14m/s2
29m/s2
200m/s2
If speed increases, centripetal acceleration ______.
stays the same
increases
decreases
cannot be determined
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
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
The minimum velocity of this ride is dependent on (select all correct answers)
m
g
μ
r
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
What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?
5 m/s2
17.63 m/s2
10 m/s2
8.81 m/s2
A bicycle has a period of 0.3s . What is the
speed of its tires if their radius is 30 cm?
6 m/s
3 m/s
60 m/s
30 m/s
The drum of a washing machine rotates 1800 times in 3 minutes. What is the period?
0.1 s
0.2 s
0.3 s
0.5 s
A toy car is following a circular path with a constant speed of v=3 m/s . If the radius of the circular path is 1 m, find The centripetal acceleration of the car
30 m/s2
3 m/s2
9 m/s2
6 m/s2
what is the centripetal acceleration formula?
What is the velocity formula for uniform circular motion?
A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?
A rope attaches a tire to an overhanging tree limb. A girl swinging on the tire has a centripetal acceleration of 3.0 m/s2. If the length of the rope is 2.1 m, what is the girl’s tangential speed?
3.5 m/s
2.5 m/s
8.5 m/s
12.5 m/s
A truck (m = 3500 kg) drives around a curve in the road (r = 20.0 m) with a constant speed of 12.0 m/s. Determine the centripetal force acting on the truck.
34300 N
70000 N
25200 N
5830 N
A student sits on a merry-go-round that has a period of revolution of 45.0 seconds. If the student is on a carousel horse that is 4.50 meters from the center, what is the student’s centripetal acceleration?
9.80 m/s2
1.23 m/s2
0.0532 m/s2
0.0876 m/s2
A test car moves at a constant speed around a circular track. If the car is 75.0 m from the track’s center and has a centripetal acceleration of 19.6 m/s2, what is the tangential speed?
1470 m/s
3.83
38.3
19.6
What is T?
the amount of time it takes to complete one circle
mass
velocity
radius
A curved groove is place on the top of a level table as shown in the diagram. A ball is pushed in the groove at P so that it leaves at Q. Which picture shows how the ball will move when it leaves the groove at Q?
At the instant shown in the diagram, the car's centripetal acceleration is directed-
toward E
toward N
toward W
clockwise
The drum of a washing machine rotates 600 times in 1 minute. What is the frequency of the drum?
600 Hz
10 Hz
0.1 Hz
0.002 Hz
What would the force between them be if the distance between them were doubled?
The radius r (the distance between the masses), is found by measuring
From the nearest surface of one object to the other's surface
From the center of one mass to the center of the other's center
From the farthest surface of one object to the other's surface
