Motion - Electrical Formulas
MOTION
Force (F) in Newtons
Mass (m) in Kg
Distance (s) in metres
Velocity (v) in metres/second
Initial velocity (u) in metres/second
Acceleration (a) in metres/second/second
Time (t) in seconds
F = ma
v = u + at
v² = u² + 2as
s = ut + ½at²
s = vt – ½at²
s = ½(u + v)t
LINEAR POWER
Power(W) = Force(N) x Speed(m/s)
ROTATIONAL POWER
Power(W) = Torque(Nm) x Speed(rpm)
9.5493
ELECTRICAL
Power (P) in Watts
Apparent Power (S) in Volt-Amps
Potential Difference (V) in Volts
Current (I) in Amps
Resistance (R) in Ohms
Impedance (Z) in Ohms
Power Factor (cosθ) where θ is the phase angle of the circuit’s impedance
FOR DC
V = IR
P = VI = I²R =V²/R
FOR SINGLE PHASE AC
P = VI cosθ = I²R
S = VI = I²Z
FOR THREE PHASE AC
P = √3 VI cosθ
S = √3 VI
MULTIPUL RESISTANCES
IN SERIES
R = R1 + R2 + R3 +…+ Rx
IN PARALLEL
1 1 1 1 1
R = R1 + R2 + R3 +…+ Rx