An automated agricultural drone crawler of weight WWW is parked and stationary on a vineyard hillside inclined at 24∘24^\circ24∘ to the horizontal, as shown in the diagram.
The normal contact force exerted by the ground on the crawler is RRR, and the frictional force acting up the slope is FFF. Since the crawler is in static equilibrium, these three coplanar forces can be represented by a closed triangle of forces.
Determine the size of the angle between the vector representing the weight WWW and the vector representing the normal contact force RRR.
Explain how the directional arrows of the three force vectors WWW, RRR, and FFF must be aligned relative to one another along the perimeter of the force triangle to correctly represent static equilibrium.
