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May 29, 2015

Homework Help: AP Physics

Posted by Noah on Wednesday, October 24, 2012 at 11:47am.

To test the performance of its tires, a car
travels along a perfectly flat (no banking) circular track of radius 120 m. The car increases
its speed at uniform rate of
at ≡
d |v|
dt
= 2.99 m/s
2
until the tires start to skid.
If the tires start to skid when the car reaches
a speed of 18.2 m/s, what is the coefficient of
static friction between the tires and the road?
The acceleration of gravity is 9.8 m/s
2

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