Download Circular Motion Name: Date: 1. A ball rolls down a curved ramp as

Circular Motion
Date:
Name:
1.
2.
A ball rolls down a curved ramp as shown in the
diagram. Which dotted line best represents the
path of the ball after leaving the ramp?
A.
A
B.
C.
C
D. D
B
A ball rolls through a hollow semicircular tube lying at on a horizontal tabletop. Which diagram best shows the
path of the ball after emerging from the tube, as viewed from above?
A.
B.
C.
page 1
D.
3.
In the accompanying diagram, a stationary
observer on the ground watches a seagull ying
horizontally to the right drops a clamshell.
4.
The gravitational force of attraction between two
objects would be increased by
A.
doubling the mass of both objects, only
B.
doubling the distance between the objects,
only
C.
doubling the mass of both objects and
doubling the distance between the objects
D. doubling the mass of one object and doubling
the distance between the objects
5.
Which diagram best represents the path of the
falling clamshell as seen by the observer? [Neglect
air resistance.]
A.
B.
C.
D.
When a satellite is a distance R from the center of
Earth, the force due to gravity on the satellite is F.
What is the force due to gravity on the satellite
when its distance from the center of Earth is 3R?
A.
6.
page 2
F
9
B.
F
3
C.
F
D. 9F
The centers of two 15.0-kilogram spheres are
separated by 3.00 meters. The magnitude of the
gravitational force between the two spheres is
approximately
A.
1:11
10
10 N
B.
3:34
10
10 N
C.
1:67
10
9N
D. 5:00
10
9N
Circular Motion
7.
In the diagram, two positively charged spheres, A
and B, of masses mA and mB are located a
distance d apart.
8.
Which diagram best represents the directions of
the gravitational force, Fg , and the electrostatic
force, Fe , acting on sphere A due to the mass and
charge of sphere B? [Vectors are not drawn to
scale.]
The accompanying graph represents the relationship
between gravitational force and mass for objects
near the surface of Earth.
The slope of the graph represents the
A.
B.
A.
acceleration due to gravity
B.
universal gravitational constant
C.
momentum of objects
D. weight of objects
C.
D.
9.
page 3
If the magnitude of the gravitational force of
Earth on the Moon is F, the magnitude of the
gravitational force of the Moon on Earth is
A.
smaller than F
C.
equal to F
B.
larger than F
Circular Motion
10.
11.
A 70.-kilogram astronaut has a weight of
560 newtons on the surface of planet Alpha. What
is the acceleration due to gravity on planet Alpha?
A.
0.0 m/s2
B.
C.
9.8 m/s2
D. 80. m/s2
13.
The diagram shown represents a mass of
10.0 kilograms traveling at a constant speed of
4 meters per second in a horizontal circular path
about point D.
8.0 m/s2
The centripetal acceleration of the satellite is
directed toward point
The diagram here represents a mass of
1.0 kilogram traveling at 8.0 meters per second in
a circular path of radius 4.0 meters.
A.
A
B.
B
C.
C
D. D
What is the centripetal acceleration of the object?
12.
A.
10 m/sec2
C.
16 m/sec2
B.
2.0 m/sec2
D.
4.0 m/sec2
14.
If the mass of the object is doubled, the magnitude
of the centripetal force will be
A.
one-half as much
B.
C.
one-fourth as much
D. four times as much
If object O is moving in a uniform circular motion
around point P at constant speed, which vector
shown represents a centripetal force?
A.
B.
C.
D.
twice as much
page 4
Circular Motion
15.
Gravitational force of attraction F exists between
two point masses A and B when they are separated
by a xed distance. After mass A is tripled
and mass B is halved, the gravitational attraction
between the two masses is
A.
1
6F
B.
2
3F
C.
3
2F
17.
The diagram shows an object with a mass of
1.0 kilogram attached to a string 0.50 meter long.
The object is moving at a constant speed of
5.0 meters per second in a horizontal circular path
with center at point O.
D. 6F
While the object is undergoing uniform circular
motion, its acceleration
16.
The diagram shows an object traveling clockwise
in a horizontal, circular path at constant speed.
Which arrow best shows the direction of the
centripetal acceleration of the object at the instant
shown?
A.
has a magnitude of zero
B.
increase in magnitude
C.
is directed toward the center of the circle
D. is directed away from the center of the circle
A.
B.
!
C.
#
D. "
18.
page 5
If the string is cut when the object is at the
position shown, the path the object will travel
from this position will be
A.
toward the center of the circle
B.
a curve away from the circle
C.
a straight line tangent to the circle
Circular Motion
19.
If the string is lengthened while the speed of the
object remains constant, the centripetal acceleration
of the object will
A.
decrease
C.
remain the same
B.
20.
increase
page 6
If the Earth were twice as massive as it is now,
then the gravitational force between it and the Sun
would be
A.
the same
B.
twice as great
C.
half as great
D. four times as great
Circular Motion
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Circular Motion
1.
Answer:
B
2.
Answer:
D
3.
Answer:
D
4.
Answer:
A
5.
Answer:
A
6.
Answer:
C
7.
Answer:
C
8.
Answer:
A
9.
Answer:
C
10.
Answer:
B
11.
Answer:
C
12.
Answer:
B
13.
Answer:
D
14.
Answer:
B
15.
Answer:
C
16.
Answer:
A
17.
Answer:
C
18.
Answer:
C
19.
Answer:
A
20.
Answer:
B
02/09/2016