Final answer:
The net force of an object can be found by calculating the vector sum of all external forces acting on the object. This can be done using a free-body diagram and vector addition or the Pythagorean theorem.
Step-by-step explanation:
The net force of an object can be found by calculating the vector sum of all external forces acting on the object. This can be done using a free-body diagram, which shows all the forces acting on an object. To find the magnitude of the net force, you can use the Pythagorean theorem if the forces are at right angles to each other. If the forces are not at right angles, you can use vector addition to find the net force.