Circular motion Involving Static Friction

AI Thread Summary
To determine how far a coin can be placed from the center of a turntable rotating at 45.0 rpm without slipping, the coefficient of static friction (0.1) and the concept of centripetal force are essential. The centripetal force required to keep the coin in circular motion is provided by the static friction between the coin and the turntable. The equation F = μsN relates the frictional force to the normal force, which is equal to the weight of the coin. By analyzing these forces, one can calculate the maximum radius at which the coin can remain stationary on the turntable. Understanding the balance of forces is crucial for solving this problem effectively.
Jtappan
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Homework Statement



A coin is placed on a turntable that is rotating at 45.0 rpm. If the coefficient of static friction between the coin and the turntable is 0.1, how far from the center of the record can the coin be placed without having it slip off?
______ cm


Homework Equations



F = mew(s)N

The Attempt at a Solution



I have no idea how to solve this one...which information is implied? Any help?
 
Physics news on Phys.org
The coin is moving in a circle right? Which means that there is some sort of centripetal force acting on the coin. What force is it?
 

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