One end of the 6mm steel shaft carries a 56mm diameter aluminium 'V' pulley and the other end is fitted with a cord anchoring collar.
showing the conversion of electrical energy to potential energy by winding up a weight on a cord. 

Physics School Lab Equipment Suppliers in India 

Ltekonline are the manufacturers of Line Shaft Unit Energy Transfer Lab used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Physics Lab Experiments for Engineering Teaching Lab in Universities