Lever paradox and scales

Purpose To illustrate the concepts of torque and levers. Parts The lever paradox  may be found fully-assembled on shelf C3 A balance scale using the principle illustrated by the lever paradox is also found fully-assembled on shelf C3 Setup… Continue reading »

Mass on spring (incomplete)

Purpose: Investigate the dependence of the period of the system on the mass, spring constant and the amplitude. Parts: Two masses Two springs Holder Setup: Setup contains two hanging masses from springs. The spring constant/mass(k/m) ratio for  spring+mass systems are same. So that the frequency of oscillations or the time… Continue reading »


Purpose The steelyard balance has been around since ancient times. It works by employing a counterweight and lever to weigh objects. Leverage is adjusted by sliding the counterweight on a metal arm. The balance may be used to demonstrate the principles of torque and center of mass. Parts The steelyard… Continue reading »