SAT Subject Physics Practice Question 455: Answer and Explanation

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Question: 455


An amusement park ride called DaVinci's cradle swings the riders around a complete circle during the course of the ride.

Where on the ride is the velocity the largest value?

A. Point A
B. Point B
C. Point C
D. Point D
E. Point E

Correct Answer: A


The correct answer is (A). The amusement ride is similar to a pendulum. The point at which the potential energy is smallest is the point at which the kinetic energy and the velocity of the pendulum have the largest value.

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