- #1
kiwikahuna
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Homework Statement
A block is at rest on the incline (32 degrees from the horizontal). The coefficients of static and kinetic friction are Us=0.73 and Uk=0.62 respectively. The acceleration of gravity is 9.8 m/s^2. What is the frictional force acting on the 39 kg mass?
PART 2: What is the largest angle which the incline can have so that the mass does not slide down the incline?
Homework Equations
force of friction = (Uk) Fn
force of friction = (Us) Fn
The Attempt at a Solution
My initial thought was that the frictional force would be 0 because the block is at rest?
I have no idea how to start part 2 either. Please help if you can!