These are the only 2 of my problems for my AP Physics class. I need help with them because I just cannotseem to understand how to get the result. Please show equations and explain so that I could understand how to get to the answer. If you only know how to do one, I welcome that too. Thanks for the help, I really appreciate it.
1) The coefficient of static friction between Teflon and scrambled eggs is about .04 What is the smallest angle from the horizontal that will cause the eggs to slide accross the bottom of a Teflon-coated skillet?
2)A circular curve of highway is designed for traffic moving at 60 km/hr. Assume the traffic consists of cars without negative lift. a) If the radius of the curve is 150 m, what is the correct angle of banking of the road? b) If the curve were not banked, what would be the minimum coefficient of friction between tires and road that would keep traffic from skidding out of the turn when traveling at 60 km/hr?
Well to answer your first question. All you have to do is take the inverse tangent of the static coefficient of friction to get the angle that the eggs will start to slide:
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