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Work
Force times displcement
W = F(xcostheta)
Equation for work.
W = mgh
Work to raise a mass to a height h under the effect of gravity
KE = 1/2(mv²)
Kinetic energy equation
Conservative force
A force where the work done by the force is independent of the path taken (gravity)
Non-conservative force
The amount of work done does depend on the path taken (friction).
PE = mgh
Potential energy of an object above the surface of the earth.
F = kx
Force law of springs (Hooke’s law)
W = (1/2)kx²
Work due to a spring
Power
The rate of doing work or the rate of energy transfer. The amount of work done in. a given amount of time.
P = deltaW/deltat
Equation for power in terms of work
P = Fdeltax/deltat
Power in terms of displacement.
Wtot = deltaKE
Work-Energy Theorem
