Formula Inclined Plane Downward force Weight Height Length
$$\class{red}{F_{\text H}} ~=~ \frac{h}{ \class{brown}{l} } \, \class{green}{F_{\text g}}$$ $$\class{red}{F_{\text H}} ~=~ \frac{h}{ \class{brown}{l} } \, \class{green}{F_{\text g}}$$
Downward force
$$ \class{red}{F_{\text H}} $$ Unit $$ \mathrm{N} $$ Force on a body that acts parallel to the inclined plane and downwards.
Weight
$$ \class{green}{F_{\text g}} $$ Unit $$ \mathrm{N} $$ Weight acts on the body on the inclined plane in the direction towards the ground.
Height
$$ h $$ Unit $$ \mathrm{m} $$ Height of the inclined plane. Measured at the highest point.
Length
$$ \class{brown}{l} $$ Unit $$ \mathrm{m} $$ Length of the inclined plane - that is, the length of the hypotenuse.