Final answer:
The net work done on the package is found by multiplying the net force (the applied force minus the friction force) by the distance.
Additionally, work done by each force can be calculated by individually considering the forces and their respective distances, including direction.
Step-by-step explanation:
To calculate the net work done on the package, we must first determine the net force acting on it. The net force can be calculated by subtracting the frictional force from the push force.
In this case, if we assume the push force P to be 120 N as from the related context given and the frictional force to be 5.00 N, the net force (Fnet) is 120 N - 5.00 N, which equals 115 N. The net work done (Wnet) is the product of this net force and the distance over which it acts.
For part (b), to find the work done by each force contributing to the net force, we would individually multiply the magnitude of each force (the applied force and friction force) by the distance the package travels, accounting for direction. The work done by the friction force would be negative since it opposes the motion.
The net force acting on the suitcase can be calculated by subtracting the friction force from the applied force. In this case, the applied force is 112 N and the friction force is 5.00 N, so the net force is 112 N - 5.00 N = 107 N.
The normal force exerted by the surface on the suitcase is equal in magnitude and opposite in direction to the weight of the suitcase. Since the weight of the suitcase is not given, we need to know the mass of the suitcase and use the formula: weight = mass × gravity.