Practise describing ruler-and-pivot experiments with masses, measuring perpendicular distances, and comparing clockwise and anticlockwise moments to test balance.
Describe an experiment involving vertical forces to show that there is no net moment on an object in equilibrium. You may draw a diagram in the space provided.
clear diagram or description (of object) with pivot and vertical forces / weights / masses / cord tension
causing moments in each direction
indicate / measure forces and perpendicular
distances
calculates a moment or shows / describes how to AND confirms equality of total moment (in each direction)
AND statement of equilibrium / balance