$(-)$ Using d'Alembert's principle derive the

equation that dives the per equilibrium

oondition for fithe system with mass m

each calculatron step?

side, shoming

$($The length of the rope with neglspible

wieight the to which the mass is feglafhed

is L The force L th is connected to the

center of mass of the object with nios

Note: Answers given using only vector alpebea

will not be accepted. g as Jeorrect answirs$)$