In a loop-the-loop ride a car goes around a vertical, circular loop at a constan
ID: 1659937 • Letter: I
Question
Explanation / Answer
speed = 16.49 m/s
r = 11.1 m
m = 226 kg
Centripetal force = m x v2/r = 226 x (16.492/11.1)
=5536.39N
1) What is the magnitude of the normal force on the car when it is at the bottom of the circle.
Centripetal force + mg = 5536.39 + (226 x 9.8)
= 7751.19 N
2) What is the magnitude of the normal force on the car when it is at the side of the circle.
Centripetal force = 5536.39N
3) What is the magnitude of the normal force on the car when it is at the top of the circle.
Centripetal force - mg = 5536.39 - (226 x 9.8)
= 3321.59 N
4) What is the minimum speed of the car so that it stays in contact with the track at the top of the loop.
= (gr)
= (9.8 x 11.1)
= 10.42 m/s
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