A Roller Coaster Car Is on a Track That Forms

question 41

Multiple Choice

A roller coaster car is on a track that forms a circular loop in the vertical plane. If the car is to just maintain contact with track at the top of the loop, what is the minimum value for its centripetal acceleration at this point?

• A) g downward
• B) 0.5g downward
• C) 2g downward
• D) g upward
• E) 2g upward

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