Answer the following questions related to the mechanical energy of a body moving…
PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
Answer the following questions related to the mechanical energy of a body moving under gravity.
(a) Define mechanical energy and name its two forms.
(b) State the principle of conservation of mechanical energy for a body acted on only by conservative forces.
(c) A stone of mass 0.20kg is dropped from rest from the edge of a cliff 80m high. Neglect air resistance and explain, without performing numerical calculations, how the mechanical energy of the stone changes from the instant it is released until just before it reaches the ground.