How large must the coefficient of friction be between the tires and the road if a car is to round a level curve of radius 125 m at a speed of 95 km/h?

Question

irishboy123 · Answer

if the car is to move in a circle, it must accelerate.   in this case, that means keeping the same speed but changing direction

the centripetal force $F_c$ that causes the car to accelerate in this way is $F_c = \dfrac{m v^2}{r}$

it comes from the tyres.

does that get you started?!?!

anonymous · Answer

And don't forget that you need to also think which force is considered centripetal and equate the two forces. In other words, there is a certain force that causes the car's path to become circular. What is that force?