Which of the following changes when a body performs uniform circular motion?
Question
Which of the following changes when a body performs uniform circular motion?
Solution
When a body performs uniform circular motion, the following changes:
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Direction of Velocity: Even though the speed remains constant in uniform circular motion, the direction of the velocity changes at every point in the path. This is because velocity is a vector quantity, which means it has both magnitude (speed) and direction. As the body moves in a circular path, the direction of its motion changes continuously.
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Acceleration: There is always an acceleration present in uniform circular motion, known as centripetal acceleration. This acceleration is directed towards the center of the circular path. Even though the speed of the body remains constant, this acceleration exists due to the continuous change in direction of the velocity.
So, in uniform circular motion, the direction of velocity and acceleration are the two things that change.
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