A roller coaster car has a mass of 1560 kg when fully loaded with passengers. As

Question

A roller coaster car has a mass of 1560 kg when fully loaded with passengers. As the car passes over the top of a circular hill of radius 15 m it's speed is not changing
A. What are the magnitude and direction of the force of the track on the car at the top of the hill if the cars speed is 11 m/s B. what are the magnitude and direction of the force of the track on the car at the top of the hill if the cars speed is 15m/s? A roller coaster car has a mass of 1560 kg when fully loaded with passengers. As the car passes over the top of a circular hill of radius 15 m it's speed is not changing
A. What are the magnitude and direction of the force of the track on the car at the top of the hill if the cars speed is 11 m/s B. what are the magnitude and direction of the force of the track on the car at the top of the hill if the cars speed is 15m/s?
A. What are the magnitude and direction of the force of the track on the car at the top of the hill if the cars speed is 11 m/s B. what are the magnitude and direction of the force of the track on the car at the top of the hill if the cars speed is 15m/s?

Explanation / Answer

Fnet on top =    mv^2/r    + mg

Fnet =   1560*(11*11/15 + 9.8)

Fnet = 27872 N

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Fnet on bottom    = mv^2/r - mg

Fnet = 1560*(15*15/15+9.8)

Fnet = 38688   N    i.e in upwards direction

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