Physics Lab: Determining Weight of Metre Rule
Aim:
To verify the weight of a metre rule using the principal of moments.
Background:
A torque (τ) in , also called a (of force) measures the tendency of a force to rotate an object about some axis (center). The magnitude of a torque is defined as the product of a force and the length of the (radius). Just as a force is a push or a pull, a torque can be thought of as a twist. The for torque is the (N m). The symbol for torque is , the tau. The principle of moments is: