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isyang94
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When a pendulum is let go from an elevated area, it will eventually stop swinging. But if this occurs then where had the mechanical energy gone to?
Mechanical energy comes from the movement or position of an object. It can be generated by a variety of sources, such as machines, human or animal muscles, or natural forces like wind and water.
Mechanical energy can be converted into other forms of energy through processes like friction, heat transfer, and chemical reactions. For example, when a car brakes, the mechanical energy of its motion is converted into heat energy through friction between the brake pads and the wheels.
When an object stops moving, its mechanical energy is transformed into other forms of energy. For example, if a ball is thrown into the air and then falls to the ground, its mechanical energy is converted into kinetic energy as it falls, and then into potential energy when it reaches the ground.
According to the law of conservation of energy, energy cannot be created or destroyed, only transformed from one form to another. Therefore, mechanical energy can only be converted into other forms of energy, but cannot be created or destroyed.
Mechanical energy is measured in joules (J) or foot-pounds (ft-lb). It is calculated by multiplying the mass of an object by its velocity squared. The faster an object is moving and the more mass it has, the greater its mechanical energy will be.