A 0.31 kg cart (M) on a horizontal air track is attached to a string, which passes over a disk-shaped pulley of mass 0.080 kg and radius 0.012 m, and is pulled vertically downward with a constant force of 1.1 N. Find the acceleration of the cart and the tension in the string between the pulley and the cart. Include neat, labeled force diagrams, and all the steps of you derivations.

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?