A mass spring system oscillating with SHM.
Position 1 (at the lowest pt) : KE(0) + PE(min) + EPE (max)
Postition 2 ( equilibrium) : KE(max) + PE + EPE are all non zero
Position 3( highest pt) : KE (0) + PE (max) + EPE(min)
At the lowest point of the mass-spring system the ke is zero but the epe is a max. As the mass moves to the equilibrium position the gpe increases and epe decreases.The ke is a max at the equilibrium position. Moving up towards the highest point the ke decreases to zero but the gpe increases to a max. The epe is minimum at the highest point. The exchange of epe, gpe and ke continues in the other next half cycle during the osc.
A nucleus undergoing radioactive decay.
The binding energy of the product greater than that of the nuclei. Energy is released as the mass of product is less than the mass of the nuclei where energy released can be calculated as mass defect multiply by square of speed of light. This energy is released during the decay process and is in the form of kinetic energy of the lighter particles like alpha or beta or emitted as photon of gamma radiation.
