# The mechanical energy

If a World Civilization book is lifted to the top shelf of a student locker, then the student supplies the force to do the work on the book. A moving car possesses mechanical energy due to its motion kinetic energy. Once more, mechanical energy is the ability to do work.

Halfway down it will have half kinetic energy and half potential energy. To drive a nail into the piece of wood which is workhe has to lift the iron hammer up, this increases its potential energy because if its high position.

### Mechanical energy formula

A moving baseball possesses mechanical energy due to both its high speed kinetic energy and its vertical position above the ground gravitational potential energy. In other words, the total mechanical energy was higher and and only depended on the height you held the pipe above the table top and not on the distance the marble had to travel through the pipe. So far we have looked at two types of energy: gravitational potential energy and kinetic energy. By pushing the door, my potential and kinetic energy was transferred into mechanical energy, which caused work to be done door opened. The magnitude of the velocity vector, the speed, of the pendulum is greatest in the vertical position and the pendulum is farthest from Earth in its extreme positions. Halfway down it will have half kinetic energy and half potential energy. For, example, if I push a door open for my pet dog to walk in, work is done on the door by causing it to open. The mechanical energy of a bowling ball gives the ball the ability to apply a force to a bowling pin in order to cause it to be displaced. That is, its mechanical energy enables that object to apply a force to another object in order to cause it to be displaced.

As the pendulum moves, energy is continuously passing back and forth between the two forms. Usually, the mechanical energy before the collision is greater than the mechanical energy after the collision. The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy. Power In a previous part of Lesson 1it was said that work is done upon an object whenever a force acts upon it to cause it to be displaced. A barbell lifted high above a weightlifter's head possesses mechanical energy due to its vertical position above the ground gravitational potential energy.

There are conditions under which the total mechanical energy will be a constant value and conditions under which it will be a changing value.

The mechanical energy of the compressed springs gives the springs the ability to apply a force to the dart in order to cause it to be displaced. Rated 8/10 based on 102 review