- #1
hoseA
- 61
- 0
A roller coaster car of mass 1216 kg slides on
a frictionless track starting at a distance 32 m
above the bottom of a loop 25 m in diameter.
The acceleration of gravity is 9.81 m/s^2
If friction is negligible, what is the magni-
tude of the force of the track on the car when
the car is at the top of the loop? Answer in
units of N.
Fn=(mv^2) /R - Fg
mgh = .5mv^2
v^2= 2gh = 2*9.81*32 = 627.84
Fn = (1216*627.84)/12.5m - (1216*9.81)
= 49147.3152N ?
apparently this is wrong. What did i do wrong?
a frictionless track starting at a distance 32 m
above the bottom of a loop 25 m in diameter.
The acceleration of gravity is 9.81 m/s^2
If friction is negligible, what is the magni-
tude of the force of the track on the car when
the car is at the top of the loop? Answer in
units of N.
Fn=(mv^2) /R - Fg
mgh = .5mv^2
v^2= 2gh = 2*9.81*32 = 627.84
Fn = (1216*627.84)/12.5m - (1216*9.81)
= 49147.3152N ?
apparently this is wrong. What did i do wrong?