Equilibrium Lab

• For equilibrium, clockwise torque must be equal to anti-clockwise torque.
• Torque depends upon the applied force
• Torque also depends upon the moment arm
• Moment arm is the perpendicular distance between point of application of force and axis of rotation
• Torque also depends upon the angle between force and moment arm
• Torque is directly proportional to applied force and moment arm
• Counter-clockwise torque is taken positive while clockwise torque is taken negative

Sum of all forces should be zero

$$ \sum F_{n} = 0 $$ $$ \sum F_{x} = 0 $$ $$ \sum F_{y} = 0 $$

Sum of all torque should be zero

$$ \sum \tau = 0 $$