5 What is the maximum speed at which a car round a curve of 25m radius on a level road if the coefficient of static friction bet
ween the tires and the road is 0.80?
1 answer:
Hi there!
On a level road:
∑F = Ff (Force due to friction)
The net force is the centripetal force, so:
mv²/r = Ff
Rewrite the force due to friction:
mv²/r = μmg
Cancel out the mass:
v²/r = μg
Solve for v:
v = √rμg
v = √(25)(9.81)(0.8) = 14.01 m/s
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