2391

Physics Rotational Mechanics Level: High School

A coin is placed 25 cm from the center of a horizontal turntable , initially at rest . The turntable then begins to rotate . When the speed of the coin is 110 cm / s (rotating at a constant rate ) , the coin just begins to slip . The acceleration of gravity is 980 cm / s^2 . What is the coefficient of static friction between the coin and the turntable ?