A 1000-kg car enters an 80.0-m radius at 20.0 m/s.
What centripetal force must be supplied by friction so
the car does not skid?
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So, to find the centripetal force, you need to know the mass of the object, the radius of the circle it's traveling in and its tangential speed. Use the equation above to find the force based on these factors. Square the speed, multiply it by the mass and then divide the result by the radius of the circle.
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