You observe an object moving clockwise in a circle, with increasing angular spee
ID: 1290065 • Letter: Y
Question
You observe an object moving clockwise in a circle, with increasing angular speed. What can you conclude about the net force acting on that object?
A.
The radius of the motion is constant, so there is no radial component of the force.
B.
The force has a radial component which points to the center of the circle.
C.
The force has a radial component which acts like a centrifugal force and points away from the center of the circle.
D.
The given information does not allow us to determine whether the net force has a radial component and, if it is there, what its sign is.
PART TWO:
You observe an object moving clockwise in a circle. The angular speed increases with time. What can you conclude about the net force acting on this object?
This is motion in a circle, so there is no tangential force.
There is a tangential component of the force but there is insufficient information to tell its orientation.
The force has a tangential component which points in the clockwise direction.
The force has a tangential component which points in the counterclockwise direction.
A.This is motion in a circle, so there is no tangential force.
B.There is a tangential component of the force but there is insufficient information to tell its orientation.
C.The force has a tangential component which points in the clockwise direction.
D.The force has a tangential component which points in the counterclockwise direction.
Explanation / Answer
1.
B.
The force has a radial component which points to the center of the circle.
2.
C.
The force has a tangential component which points in the clockwise direction.
The force has a tangential component which points in the clockwise direction.
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