Determine the frictional force acting on the box

1. The problem statement, all variables and given/known data


determine the magnitude of the frictional force acting on the box on the plane
2. Relevant equations
f=ma


3. The attempt at a solution
no clue. help ??

 

the tension was part a. this is part b. the force diagram would be the same as the other but without the force of the rope.

 

well there isnt an angle?

 

the whole problem reads this. two 10 kilogram boxes are connected by a massless string that passes ocer a massless frictionless pulley as shown above( this would be the picture on the other problem) The boxes remaine at rest, with one on the right hanging vertically and the one on the left 2.0meters from the bottom of an inclined plane that makes an angle of 60 degrees with the horizontal. The coefficients of kinetic friction and static friction between the left hand box and the plane are .15 and .30 respectively. You may use g=10m/s^2, sin60=.87, and cos60=.50
a. what is the tension T in string
b. On the diagram below draw and label all forces acting on the box that is on the plane.
c. determine the magnitude of the frictional force acting on the box on the plane.