Restoring force on a displaced pendulum

Principle

The students should measure the restoring force F of a deflected pendulum as a function of the deflection x for two different pendulum lengths.

Additionally, they should calculate the ratios x / l and F / F_g and compare them with each other. From the force parallelogram on the deflected pendulum they should conclude that these ratios are nearly equal.

Benefits

• Student-suitable experiment descriptions with reports available