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Topic 6: Potential Energy and Conservation of Energy - Coggle Diagram
Topic 6: Potential Energy and Conservation of Energy
Principle of Conservation of Mechanical Energy
Total mechanical energy of a system is constant if there are only conservative forces
Conservative and Nonconservative Forces
Conservative forces
: The work done by the force on an object moving from one point to another depends only on the initial and final positions of the object, and is independent of the particular path taken.
Example : Gravity
Mostly is potential energy
Non-conservative forces
: The work done depends not only on the starting and ending points, but also on the path taken.
Example : Friction
Mostly is forces that oppose the motion
Potential Energy
Gravitational potential energy = mgh
Elastic potential energy = 1/2(
k
)(
x
^2)
Force of spring
, k is spring constant
Law of Conservation of Energy
The total energy remains constant but it can transfered from one to another
Gravitational Potential Energy and Escape Velocity
Gravitational potential energy
Escape velocity
Power
