# Someone please help me i just dont get it

Heres my problem..i just dont get it..and im in AP Phys....

A greased pig slides down a slide in 1/2 the time it takes for the same pig to slide down the same slide "dry." What is the coefficient of friction of the "dry" pig as a function of (theta). If the angle the slide makes with the horizontal is 27(degrees) what is (Mu)??

## Answers and Replies

Pyrrhus
Homework Helper
Apply Newton's 2nd Law on both cases, then use a kinematics formula with time and work it from there.