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why is normal force equal to zero at the highest point of a roller coaster?

why is normal force equal to zero at the highest point of a roller coaster?

Grade:11

2 Answers

MUKESH chinna YADAV
42 Points
8 years ago

because there is no applied force on the particle so the force is zero at the highest point of a roller coaster

anurag bhattacharjee
42 Points
8 years ago

Because at that particular instant only,it is fully under free fall situation[upside down].Practically it is mechanically attached to the tracks but there is no natural compression by it.

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