SD-1.20 - Belt Friction Apparatus

The Belt Friction Apparatus has been designed to allow students to
carry out investigations to compare the driving torque for a given
degree of overlap of a flat leather belt, a badly fitted ‘V’ belt and a
correctly fitted ‘V’ belt.

Tension is introduced into the belt by hanging a mass from the ring
attached to the end. The slipping torque is determined by the addition
of a suitable mass attached to a cord wrapped around the drum.

The angle of overlap can be varied from 30 to 210 degrees in
increments of 30 degrees. The pulley is balanced and mounted on
bearings to reduce frictional losses to a minimum.

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