An architect needs to pump 2.3 lbm/s of water to the top of the empire state building, which is about 1000 ft high. assume water at 45 psia is available at the base of the building. what is the power of the pump needed, in hp, if the flow is assumed frictionless? the velocity of the water is constant.

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?