Recent content by cstryker02

A 3.20g coin is placed 19.0cm from the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of (u)static=0.900 and (u)kinetic=0.400. What is the maximum angular velocity with which the turntable can spin without the coin sliding?

yea i have done the FDB but I am totally lost on the equations for the problem, i don't know how to find the speed with the "knowns" that i have been given.

A 500 g ball swings in a vertical circle at the end of a 1.5-m-long string. When the ball is at the bottom of the circle, the tension in the string is 15 N. What is the speed of the ball at that point?