AP Physics 1 Question 340: Answer and Explanation

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Question: 340

8. If a roller coaster cart of mass m was not attached to the track, it would still remain in contact with a track throughout a loop of radius r as long as

  • A. v
  • B. v
  • C. v
  • D. v

Correct Answer: B



At the top of the loop, the cart will remain in contact as long as the centripetal force is at least as much as the force of gravity on the cart.