Mr Ndlovu works in centurion and works at Rosebank. It takes him 13minutes to get to work and he needs to be there at 08h15 at what time must he leaves at his home to get to work?​

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?