A 10.7 g CD with a radius of 6.06 cm rotates with an angular speed of 30.9 rad/s. What is its kinetic energy?
What angular speed must the CD have if its kinetic energy is to be doubled?
Here is my work:
kinetic energy energy = 1/2 m v2
= 1/2 m ( r ω )2...
how do i figure out the velocity and the acceleration?
I need the velocity for the centripetal force equation & I need the acceleration for the f=ma equation.
thanks so much.