What is the similarity between a fjord and a gully? Both are formed by glaciers. Both are formed by rivers and streams. They are examples of erosion by water in different forms. They are examples of erosion and deposition by strong winds.

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?