Sections
Key Equations

Key Equations

equation for work W=fdW=fd
force f=w=mgf=w=mg
work equivalencies W=PEe=fmgW=PEe=fmg
kinetic energy KE=12mv2KE=12mv2
work–energy theorem W=ΔKE = 12mv2212mv12W=ΔKE = 12mv2212mv12
power P=WtP=Wt
conservation of energy KE1+PE1=KE2+PE2KE1+PE1=KE2+PE2
ideal mechanical advantage (general) IMA=FrFe=dedrIMA=FrFe=dedr
(lever) IMA=LeLr (wheel and axle) IMA=Rr (inclined plane) IMA=Lh (wedge) IMA=Lt (pulley) IMA=N (screw) IMA=2πLP (lever) IMA=LeLr (wheel and axle) IMA=Rr (inclined plane) IMA=Lh (wedge) IMA=Lt (pulley) IMA=N (screw) IMA=2πLP 
input work Wi=FidiWi=Fidi
output work Wo=FodoWo=Fodo
efficiency output % efficiency=WoWi×100% efficiency=WoWi×100