work, energy, power
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19 Terms
The product of force and the amount of displacement of that force
work
_ is performed only is the object is linearly displaced by the force application
_ work is apple force on the object in the same direction as the displacement of the object
positive
_ work is applied force in the opposite direction to the displacement
negative work
The ability to do work
energy
Energy due to motion, stored in a moving object
kinetic energy
Energy stored due to position or deformation
potential energy
The energy stored due to an object’s position above the ground
gravitational potential energy
The energy stored due to the deformation of the object
strain energy
Energy that an object possesses because of its velocity
kinetic energy
More KE means a greater capacity for
work
The greater the deformation of the object, the greater the
strain energy stored
The total mechanical energy of a system =
KE + PE
In the absence of an externally applied force, total mechanical energy of a system is
constant
the rate of doing work
power
How much work is done in a specific amount of time
power
How fast work is done upon an object
power
Power =
force * velocity
Power =
work/ change in time
