1. The problem statement, all variables and given/known data A 50kg crate rests on the floor. The coefficient of static friction is .5. The force parallel to the floor needed to move the crates is most nearly: Choices: 50N 125N 250N 500N 2. Relevant equations I have no idea what equation to use for this equation. 3. The attempt at a solution No attempts yet since I don't know which equation to use.