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Work,Energy and Power - Coggle Diagram
Work,Energy and Power
Energy
Energy is ability to do work
Mechanical Energy
Gravitational Potential Energy
\[U_g=mgh\]
Elastic Potential Eergy
\[U_{sp}=\frac12kx^2\]
Kinetic Energy
\[K=\frac12mv^2\]
Conservation of Mechanical Energy
\[E_i=E_f\]
\[E=\frac12mv^2+mgh+\frac12kx^2\]
Work Done
Condition required:
Force should act on an object
Object must be displaced
Equation of Work Done
\[W=\vec{Fs}=Fs\cos\theta\]
\[\textrm{SI unit is Joule, }J\]
Net Work Done
\[W_{net}=\Delta K\]
\[W_{net}=\vec{F_{net}}\bullet\vec{s}=F_{net}\times s\times\cos\theta\]