Cirular Motion - car on a circular ramp

[Fatima Hasan]

Homework Statement

A 1200 kg car has a speed of 5 m/s at the top of a circular ramp of 10 m in radius. The normal force exerted by the seat of the ramp on the car is :
A) 9000N B) 9600 N C)11250 N D)13650 N E)14150 N

Homework Equations

∑F=ma
ac = m v^2 /r

The Attempt at a Solution

I tried to answer this question but the problem is I don't know where I made the mistake. This is my tried :
∑F = ma = m v^2 /r = N - mg
N = 1200 * 5^2 / 10 + 1200*10
N = 15000 N
So can you check please if it's correct or not ?
Thank you.

 

[ehild]

Homework Statement

A 1200 kg car has a speed of 5 m/s at the top of a circular ramp of 10 m in radius. The normal force exerted by the seat of the ramp on the car is :
A) 9000N B) 9600 N C)11250 N D)13650 N E)14150 N

Homework Equations

∑F=ma
ac = m v^2 /r

The Attempt at a Solution

I tried to answer this question but the problem is I don't know where I made the mistake. This is my tried :
∑F = ma = m v^2 /r = N - mg
N = 1200 * 5^2 / 10 + 1200*10
N = 15000 N
So can you check please if it's correct or not ?
Thank you.

It is not correct. Check the direction of the individual forces.

 

[PeroK]

It is not correct. Check the direction of the individual forces.

Does this question look right to you?

 

[Fatima Hasan]

It is not correct. Check the direction of the individual forces.

Got it . Thank you

 

[PeroK]

Got it . Thank you

My answer would be $0N$. But that's not an option!

Sorry, I just realized the car is on top of the ramp! I wonder how it got there?