Equilibrium (VCE SSCE Physics): Flashcards

Sum of all translational and rotational forces equals zero

$\tau = r_{\perp}F$

Sum of all torques equals zero: $\sum \tau = 0$

Net force equals zero: $\sum F = 0$

Perpendicular distance from pivot to line of action of force

Creates no torque

Centre of mass

Vector (has magnitude and direction: clockwise/anticlockwise)

Force far from pivot creates large torque with small force

Select point where unknown force acts to eliminate it