Formulas

 

Force                                             F = m x a

 

Potential energy                         PE = mgh

 

Kinetic energy                             KE = ½ m v2 

             

Work                                             W = F x D

 

Drag coefficient                          D = ½ Cd ρ A V2

 

Density                                         r = M / V

             

Pressure                                      P = F / A           or           P = ρ (density) x h

             

Mass flow rate                            mdot = r * A * V 

                                                                                                        

Velocity                                        v = d / t             or           v = √2gh

 

Volume                                        v = area x length           or           m/r (densit

Total energy                              ME = PE + KE

 

Current                                       coulombs/sec            or           I = Q/t

 

1 amp = 1 coulomb or 6.25 x 1018 electrons/sec

 

                                                                                   

                                                                                       

                                                                            

                   WORK EQUATIONS

                                                                                     

        

Mechanical	Force	Linear	W = F x D
	Torque	Angular	W = T x θ
Fluid	Pressure	Volume	W = p x (ΔV)
			W = (Δp) x V
Electrical	Voltage	Charge	W = (ΔV) x q

 

 

Units

                                                                               

Units for force = lb or Newton                          

Units for work = Joule = N x M

Units for pressure:  lb/in2  (psi)   or   N/cm2