An object with a mass of #3 kg# is hanging from a spring with a constant of #8 (kg)/s^2#. If the spring is stretched by #2 m#, what is the net force on the object?
For this problem, let's consider upwards to be the positive direction.
Gravity is acting downwards on the object, i.e. in the negative direction. So
Also, the spring is stretched by
Now, the net force will be the sum of the upwards and downwards forces acting on the object.
Therefore, the net force acting on the object is