Recent content by Kyriam

DISCLAIMER: These are just my opinions, I have been wrong often enough. Since the gravitational potential energy does not change and there is no friction (horizontal frictionless surface), the change in total and kinetic energy is equal to the work of the constant braking force. The change in...

Homework Statement A 0.4 kg object rotates in a vertical circle at the end of a 0.5 m string. What is the tension of the string at the bottom if the angular velocity there is 8.0 rad/s? Homework Equations centripetal acceleration = R*w^2 weight = mg R = radius of circle w = angular...