Which of the following would be a reasonable estimate for the height of a skyscraper?
1 × 10^-8 feet 1 × 10^-3 feet
1 × 10^3 feet
1 × 10^8 feet

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?