Problem: A block lies on a plane raised an angle  from the horizontal. Three forces act upon the block:, the force of gravity; , the normal force; and , the force of friction. The coefficient of friction is large enough to prevent the block from sliding (Intro 1 figure).Consider coordinate system a, with the x axis along the plane. Which forces lie along the axes?

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The normal force, Fn, points in the positive y-axis.

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Problem Details

A block lies on a plane raised an angle theta from the horizontal. Three forces act upon the block:F_w_vec, the force of gravity; F_n_vec, the normal force; and F_f_vec, the force of friction. The coefficient of friction is large enough to prevent the block from sliding (Intro 1 figure).

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Consider coordinate system a, with the x axis along the plane. Which forces lie along the axes?