Question

what is meant by mechanical energy state its two forms state the law of conservation of energy given example in which we observe a continue change of one form other or vice versa

Answer 1

mechanical energy is the sum of potential energy and kinetic energy. It is the energy associated with the motion and position of an object.two forms is kinetic and potential energies
y

Answer 2

Mechanical energy is the energy possessed by an object that has undergone work. It is of two types:

1. Kinetic energy: Kinetic energy is concerned with the motion of the object. When the object is moving, it possesses kinetic energy. e.g. movement of a ball thrown in the air.
2. Potential energy: Potential energy is the energy of an object that is not related to motion. It is the energy that the object could potentially possess if it moved. e.g. gravitational potential energy.

Law of Conservation of Energy:

According to the law of conservation of energy, the total energy of an object does not differ and remains conserved over time. Just like energy can neither be created nor destroyed but it can be conserved.

Example: The trajectory of a ball after hitting the bat shows a change in mechanical energy however it is conserved. The moment the bat hits the ball, it has potential energy and no kinetic energy. However, as the ball goes higher up in the air, the kinetic energy increases while the potential energy decreases. When the ball lands back on earth, it possesses potential energy and no kinetic energy again.