Gravitational Belt-Pulley System

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Power and Electricity is a big issue in this world where 13% people of this planet are living without electricity.So why not use Gravity as a source of power? The process is very simple – All you need is a large pulley,a small pulley connected with generator.If we apply weight on large pulley through a chain, the pulley will rotate slowly and fall causing the small pulley with generator to rotate fast producing AC current.To store the current in capacitor, we have to use a bridge rectifier to turn the ac current to the DC. Which we can use to charge our phone or simply as reading light.