Advertisements
Advertisements
प्रश्न
What do you understand by the conservation of mechanical energy?
उत्तर
According to the law of conservation of mechanical energy, whenever there is an interchange between the potential energy and kinetic energy, the total mechanical energy (i.e., the sum of kinetic energy K and potential energy U) remains constant, i.e., K + U = constant when there are no frictional forces.
APPEARS IN
संबंधित प्रश्न
A body of mass 10 Kg is kept at a height of 5m. It is allowed to fall and reach the ground.
(i) What is the total mechanical energy possessed by the body at the height of 2m assuming it is a frictionless medium ?
(ii) What is the kinetic energy possessed by the body just before hitting the ground ? Take g = 10 m/s2.
Is it practically possible to convert a form of energy completely into the other useful form? Explain your answer.
What is degraded energy?
Explain the degradation of energy by taking one example of your daily life.
The conversion of part of energy into an undesirable form is called ______.
State the principle of conservation of energy.
