- #1

- 38

- 4

- Homework Statement
- If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the curve (a problem on icy mountain roads). (a) Calculate the ideal speed to take a 100.0 m radius curve banked at . (b) What is the minimum coefficient of friction needed for a frightened driver to take the same curve at 20.0 km/h?

- Relevant Equations
- tan(theta)-(v^2)/(rg) = us

where us is coefficient of static friction

The solution in my textbook says that for b, us = 0.234. However when I use the formula above I get 0.2364 which I feel like is too far off. Something must have gone wrong...

Any help would be much appreciated!

Thanks :)

Any help would be much appreciated!

Thanks :)