a block of mass 2kg is in at rest on a rough plane inclined at 30°, it is in limiting equilibrium with with a force of 20N applied horizontally (to the ground).
Find the coefficient of static friction between the block and the plane.
The Attempt at a Solution
Now I now my answer cannot be minus something as 0<μ<1, however, I am unsure as to whether it is my understanding of the question or the algebra I have got wrong. Im sure its a silly mistake, it usually is with me but any help or advice is greatly appreciated.