Part A
A 15 kg box is sitting in the bed of a pickup truck. The truck begins to accelerate at a constant rate of 1.5 m/s 2. Given that the friction between the box and the truck bed is characterized by a coefficient of kinetic friction of 0.50 and a coefficient of static friction equal to 0.75, what is the magnitude of the friction force acting on the box once the truck begins its acceleration?
System: We will treat the box as a point particle subject to external influence from the earth (gravity) and the truck bed (normal force and friction force).
Model: Point Particle Dynamics.
Approach: