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Trail_Builder
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Homework Statement
A block of mass 10kg on a rough plane inclined at 30deg to the horizontal. A horizontal force P acts on the block. The coefficient of friction between the block and the plane is 0.4, and it is sufficiently small for the block to slide down the slope if P does not act. Find the range of possible values of P if the block remains stationary.
Homework Equations
The Attempt at a Solution
Ive made an attempt but I think I may be wrong, before I bother post it, can I just check a few of my assumptions are correct?
- The surface reaction is perpendicular to the "rough plane".
- The friction force is directed directly up the "rough plane".
Im not too confident on those 2 assumptions and my initial attempt goes on those 2 being true :S
can someone please clarify?
thanks