Posted by **joann** on Wednesday, October 28, 2009 at 12:48pm.

A roller-coaster car has a mass of 1170 kg when fully loaded with passengers. As the car passes over the top of a circular hill of radius 16 m, its 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 car's speed is 11 m/s?

______N

upward

downward

no force

(b) What are the magnitude and direction of the force of the track on the car at the top of the hill if the car's speed is 17 m/s?

_________N

upward

downward

no force

- Physics -
**bobpursley**, Wednesday, October 28, 2009 at 2:33pm
force on track=mg-mv^2/r

## Answer This Question

## Related Questions

- physics - A roller-coaster car has a mass of 1100 kg when fully loaded with ...
- physic - A roller-coaster car has a mass of 500 kg when fully loaded with ...
- physics hw - A 300. kg roller coaster car is traveling at a constant speed of 15...
- physics - The loaded car of a roller coaster has mass M = 320 kg. It goes over ...
- Physics - A roller-coaster car has a mass of 500 k when fully loaded with ...
- Physics - A roller coaster works by gravitational energy. The coaster car is ...
- Physics - A very large roller coaster has an initial hill that has an 85 m drop...
- Physics - A very large roller coaster has an initial hill that has an 85 m drop...
- physics - The mass of a roller-coaster car, including its passengers, is 481 kg...
- Physics - At the beginning of a roller coaster ride, the car is lifted to the ...

More Related Questions