A horse pulls a 127 kg plow 42.1 m across a field. How much work is done by the horse's applied force if the horse pulls with 2030 N of force on a rope that is angled at 15 degrees? You have to find Joules.

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?