A mass of 2.5kg is attached to a spring and the system is undergoing simple harmonic osciallyions with the frequncys of 3.0 Hz and an amplitude of 8.25 cm. What is the total mechanical enegry of the system?

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.