A 50 N crate slides down an inclined plane raised 15° above the horizontal. What force does the inclined plan?
A 50 N crate slides down an inclined plane raised 15° above the horizontal. What force does the inclined plane exert on the crate?
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well, the crate is being pulled down with MG, correct? well FN would be the incline pushing on the crate?
but since it is on an angle, FN= mgcos(15) as it is the vertical component of gravity that is pushing against the incline, not the horizontal.
so
mg=FN
50(cos15)= FN
FN= 48.3N