Concept explainers
Can an object move along a curved path if no force acts on it?
Whether an object can move along a curved path if no force acts on it.
Answer to Problem 42A
No
Explanation of Solution
Introduction:
When an object moves in a circle, its speed remains constant always but its direction always changes which is always tangential.
Thus, the velocity of the object always changes when it moves along a curved path and thereby it can be said the object is accelerating on the curved path.
Then using Newton’s second law of motion, when there is a change in momentum of the object, then it means a force must acts on it which is given by,
Conclusion:
Hence a force must be acting on an object which is moving along a curved path.
Chapter 10 Solutions
Conceptual Physics: The High School Physics Program
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