An object with a mass of #7 kg# is on a ramp at an incline of #pi/12 #. If the object is being pushed up the ramp with a force of # 2 N#, what is the minimum coefficient of static friction needed for the object to remain put?
The minimum coefficient of static friction is
You have to visualize the force's diagram of the object.
Assuming the sistem with
There is the orizontal component that is
If the object remains "put": Friction Force=F(x)