An object with a mass of #6 kg# is hanging from a spring with a constant of #12 (kg)/s^2#. If the spring is stretched by # 9 m#, what is the net force on the object?
The net force
The net force on the object is the difference between the force of the spring pulling up and the weight of the object.
The weight of the object (acting downwards) is
The force of the spring (acting upwards) is
So there is a net force (acting upwards) of