Angular Motion - Power and Torque

Angular velocity and acceleration - power and torque

Power of a Body in Angular Motion

The power of a rotating body can be expressed as

P = T ω         (1)

where

P = power (W)

T = torque or moment (Nm)

ω = angular velocity (rad/s)

• 1 rad = 360^o / 2 π =~ 57.29578^o

Torque of a Body in Angular Motion

T = J α          (2)

where

J = polar moment of inertia (kg m², lb_m ft²)

α = angular acceleration (rad/s²)

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