Question

what is the ratio of potential energy & kinetic energy at a height of H/3 of M mass object ?

Answer 1

mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters. Notice that gravitational potential energy has the same units as kinetic energy, kg m2 / s2.