- #1
y90x
- 47
- 0
Homework Statement
a 1000kg sports car moving at 20m/s crosses the round top of a hill (radius of 100 m) . Determine the normal force on the car
Homework Equations
Newton’s second law
F=ma
The Attempt at a Solution
I figured out the centripetal acceleration
Ac= v^2/r
= 4 m/s^2
My attempt at finding the normal force :
Fn= mv^2/r + mg
= 1,000•20^2 / 100 + 1,000•9.8
=5800N
But the answer is 6206 N
Where did I go wrong ?