What Are the Steps to Solve These Physics Problems on Motion and Forces?

[luvzdaladeez]

PROBLEM 1
A 91 kg refrigerator is placed on a ramp. The refrigerator begins to slide when the ramp is raised to an angle of 34 degrees. What is the coefficient of static friction?


PROBLEM 2
A student moves a box of books down the hall by pulling on a rope attached to the box. The student pulls with a force of 185N at an angle of 25 degrees above the horizontal. The box has a mass of 35.0 kg, and coefficient between the box and the floor is 0.27. Find the acceleration of the box.

I NEED GUIDANCE ON HOW TO SOLVE THESE PROBLEMS
PLEASE INCLUDES STEPS SO THAT I CAN SEE EXACTLY HOW THE ANSWER WAS FOUND.

THANX

 

[||spoon||]

Well if we concentrate on problem 1:

First of all draw a force diagram acting on the fridge.
resolve the forces perpendicular and parallel to the fridge's motion.
set up a force equation using f=ma.

 

[silvashadow]

I don't think this forum hands out answers.