Respuesta :
Potential energy
It is the ability of bodies to do a job, depending on the height they are in.
Kinetic energy
It is the ability of a body to perform a job according to its speed and mass. If a force is applied to a body, it can cause a change in speed.
Mechanical energy
Mechanical energy exists in two forms: the energy of position or potential energy (Ep) and the energy of motion or kinetic energy (Ec).
Example:
Case 1
Suppose we have an object of mass m that falls vertically from a height h and that it comes with velocity v
Case 2
Suppose we have an object of mass m that slides from a height h through a wedge without friction and with velocity v.
Desmostration:
Although the two cases are different, the mechanical energy is the same. Since, its kinetic and potential energy is the same.
(see attached image).
It is the ability of bodies to do a job, depending on the height they are in.
Kinetic energy
It is the ability of a body to perform a job according to its speed and mass. If a force is applied to a body, it can cause a change in speed.
Mechanical energy
Mechanical energy exists in two forms: the energy of position or potential energy (Ep) and the energy of motion or kinetic energy (Ec).
Example:
Case 1
Suppose we have an object of mass m that falls vertically from a height h and that it comes with velocity v
Case 2
Suppose we have an object of mass m that slides from a height h through a wedge without friction and with velocity v.
Desmostration:
Although the two cases are different, the mechanical energy is the same. Since, its kinetic and potential energy is the same.
(see attached image).
