Equilibrium/Statics Question

[wildareal]

A body of mass 25kg rests in limiting equilibrium on a plane 30 degrees to the horizontal. If the plane is raised until it is at an angle of 60 degrees to the horizontal, find:

a) the least force acting up the plane required to keep the mass in equilibrium.
b) the horizontal force required to keep the body from slipping down the plane.

[wildareal]

Hi Wildareal,

I'm not 100% sure, but

for
a) f=25sin(30)
b) f=25sin(60)

Since the particles are static.