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Question

n the diagram, the gravitational force acting on the block is decomposed into F_{parallel } and F_{perpendicular. } The force F_{parallel} is along the incline plane, and the force F_{perpendicular} is perpendicular to the incline plane.

There are two additional forces acting on the block.

- Frictional force, F
_{f}(along the incline plane, opposing the motion of the block) - Normal force, F
_{N}(perpendicular to the incline)

Draw and label F_{f }and F_{N }on the diagram.

If the block is at rest, what does it say about the net force acting on the block?

Write down two force equations showing the net force on the block when the block is at rest. (hint: one equation for the direction along the incline, and one equation for the direction perpendicular to the incline.)

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Physics

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