Question
A person carries a plank of wood 2.00 m long with one hand pushing down on it at one end with a force $F_1$ and the other hand holding it up at 50.0 cm from the end of the plank with force $F_2$. If the plank has a mass of 20.0 kg and its center of gravity is at the middle of the plank, what are the magnitudes of the forces $F_1$ and $F_2$ ?

$F_1 = 196 \textrm{ N}$, $F_2 = 392 \textrm{ N}$

Solution Video