6
lesson pretestMultiple Choice

Pretest

Question 6 • Physics I

An object is in circular motion. How will the object behave if the centripetal force is removed?

Answer
A
It would move in a line toward the circle’s center.
B
It would move in a line away from the circle’s center.
C
It would move in a curved, circular path.
D
It would move in a line tangent to the circular path.

Explanation

Centripetal force continually changes the direction of an object’s velocity to keep it moving in a circle. If that force is removed, the object continues in the direction it was moving at that instant, along a straight line tangent to the circular path. Therefore, the correct choice is D, “It would move in a line tangent to the circular path.”

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