Work, Power and Energy
Work:
The work, W, done by a constant force on an object is defined as
the product of the component of the force along the direction of
displacement and the magnitude of the displacement.
Calculation of Work:
When calculating work, only the force that is applied in the
direction of motion is considered. W=Fdcosθ
Postive Work:
If the force and displacement are in the same direction, that would
be considered positive work.
Power:
Power is a measure of how quickly work is done.
Kinetic Energy:
Kinetic energy is energy of motion. All moving object possess
kinetic energy.
Gravitational Potential Energy:
Gravitational Potential energy is the energy an object possessed due
to its position.
Base Level:
The point that height is measured from. Any point can be used as a
base level because the energy amount you calculate will be relative.
Conservation of Energy:
Energy cannot be created or destroyed; it may be transformed from
one form into another, but the total amount of energy never changes.
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