Final answer:
The numerical value of the net force parallel to the ramp can be calculated using the given information.
Step-by-step explanation:
The numerical value of the net force, Fn, parallel to the ramp can be calculated using the given information. First, we need to determine the acceleration of the safe up the ramp. We can use the formula a = Fparallel / m, where Fparallel is the component of the force parallel to the ramp and m is the mass of the safe. Given that the force is 1150 N and the mass is 250 kg, the acceleration is 4.6 m/s2.
If we consider the friction force of 120 N, the net force can be calculated as Fnet = Fparallel - Ffriction. Substituting the values, the net force is 1030 N.