Question

state laws of conservation of mechanical energy? what is the essential condition for it?​

Answer 1

Answer:

Mechanical energy is conserved only when there are no frictional forces for a given system (i.e. between body and air). Thus, conservation of mechanical energy is strictly solid only in vacuum, where friction due to air is absent.

Answer 2

Explanation:

Mechanical energy is conserved only when there are no frictional forces for a given system (i.e. between body and air). Thus, conservation of mechanical energy is strictly solid only in vacuum, where friction due to air is absent.