Question

A flat (unbanked) curve on a highway has a radius of 240 m . A car successfully rounds the curve at a speed of 37 m/s but is on the verge of skidding out.

Part A

If the coefficient of static friction between the car’s tires and the road surface were reduced by a factor of 2, with what maximum speed could the car round the curve?

Express your answer in meters per second to two significant figures.

part B

Suppose the coefficient of friction were increased by a factor of 2; what would be the maximum speed?

Express your answer in meters per second to two significant figures.

Answer 1

We know that maximum speed of the car on the flat curve highway

....1 so

V=37 m/s , r=240 m , g=9.8 m/s²

part (a) According to the question  

As you know

V=26 m/s Answer

part( b) According to the question

V=52 m/s Answer