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nugget
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Homework Statement
Car is driving up a slope, 16o to the horizontal, trying to accelerate as much as possible. Static friction coefficient = 0.9. Kinetic Friction coefficient = 0.8. Find the magnitude of the maximum possible acceleration (assuming a powerful enough engine).
Homework Equations
F=ma
F(friction) = (static friction coefficient) x Normal force
Normal force = mgcos(16)
The Attempt at a Solution
I drew a force diagram and worked out the Engine force required to overcome the gravity and friction forces and keep the car in constant velocity:
No mass is given so i canceled out the masses and found acc. to be 11.2 m/s-2. I used the static friction coefficient because I was told that the wheels have to be skidding for me to use the kinetic friction coefficient.
Can anybody help me with this question? I have a value for acceleration but I think I am doing something wrong, otherwise the question wouldn't ask for a maximum value.