H2 Physics Moments and Equilibrium Practical: Pivot, Torque and Centre of Mass

Q: What is the key skill in a H2 Physics moments practical?
A: It is balancing forces and distances about a pivot, while accounting for the metre rule's own weight, distance uncertainty, and pivot friction.

TL;DR
In a moments practical, balance a metre rule on a pivot, record forces and perpendicular distances, then test whether clockwise moment equals anticlockwise moment. The formula is simple. The scoring detail is in finding the rule's centre of gravity, measuring every distance from the pivot, and explaining residual imbalance using quantified errors.

Use this with H2 Physics practical lab mastery, H2 Physics Paper 4 spreadsheet skills, and H2 Physics ACE evaluation.

Quick moments map

• A moments practical is a balance problem: Choose the pivot and measure distances from it.