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Physics Circular Motion Quiz
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Gravity
Terms in this set (18)
b. is perpendicular to the plane of motion
When an object is moving with uniform circular motion, the object's tangential speed
a. is circular
b. is perpendicular to the plane of motion
c. is constant
d. is directed toward the center of motion
d. is directed toward the center of motion
When an object is moving with uniform circular motion, the centripetal acceleration of the object
a. is circular
b. is perpendicular to the plane of motion
c. is zero
d. is directed toward the center of motion
c. centripetal force
What is the term for the net force directed toward the center of an object's circular path?
a. circular force
b. centrifugal force
c. centripetal force
d. orbital force
d. all of the above
Which of the following can be a centripetal force?
a. friction
b. gravity
c. tension
d. all of the above
b. in the plane of the object's motion and perpendicular to the tangential speed
The centripetal force on an object in circular motion is
a. perpendicular to the plane of the object's motion
b. in the plane of the object's motion and perpendicular to the tangential speed
c. in the plane of the object's motion and in the same direction as the tangential speed
d. in the plane of the object's motion and in the direction opposite the tangential speed
c. in the same direction as the centripetal acceleration
The centripetal force on an object in circular motion is
a. in the same direction as the tangential speed
b. in the direction opposite the tangential speed
c. in the same direction as the centripetal acceleration
d. in the direction opposite the centripetal acceleration
b. friction
What kind of force provides the centripetal force on a bicycle?
a. gravitational force
b. friction
c. air resistance
d. normal force
d. inertia
When a car makes a sharp left turn, what causes the passengers to move toward the right side of the car?
a. centripetal acceleration
b. centripetal force
c. centrifugal force
d. inertia
d. inertia
A ball is whirled on a string, then the string breaks. What causes the ball to move off in a straight line?
a. centripetal acceleration
b. centripetal force
c. centrifugal force
d. inertia
c. angular velocity is related to rpm
Which of the following is true?
a. tangential velocity is the same as rpm
b. tangential velocity and angular velocity are the same quantity
c. angular velocity is related to rpm
d. angular velocity point toward the center of the circle
c. centrifugal force makes a rider feel like she wants to go backwards on a spinning carnival ride where the floor drops out
Which of the following is false?
a. centrifugal acceleration is a fictitious force
b. centrifugal force is the opposite of centripetal force
c. centrifugal force makes a rider feel like she wants to go backwards on a spinning carnival ride where the floor drops out
d. centrifugal force is due to the objects inertia
true
T/F: the greater the radius of a spinning object on a string, the faster the tangential velocity
true
T/F: if the mass of a spinning object is tripled, the centripetal force acting on the object will be tripled
false
T/F: a centripetal force vs. radius graph is a parabola
false
T/F: because a rock on a string is rotating at a constant speed, it cannot be accelerating
true
T/F: when an airplane banks and makes a turn the centripetal force is supplied by the lift from air under the wings
false
T/F: a rock on a string is being whirled vertically, straight up and down. besides the centripetal force, another force that must be considered is the normal force
true
T/F: a car is on a sloped bank making a left turn. the slope is necessary so the car doesn't slide off the road (Newton's 1st Law). besides the friction of the tires against the road supplying the centripetal force, you must also consider the normal force
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