Question

What analogy is used to describe the gear system?

Answer 1

Newton's third law governs in the turning of gears. Basically a torque is formed due to a coupling force. Now a large gear is joined with the pivoted point of the blades. When the blade turns the gear turns too turning other gears as well. 
Now why i said a large gear turning small gears is that for one rotation of a large gear a small gear does more rotation. So a small gust of wind turning the large gear to 1/100 th rotation turns the smaller gears to maybe 5 rotations.

Now to the amazing part. Getting to produce the electricity. The gears turning is connected to a dynamo. The dynamo is responsible for producing the required electricity. And that is the total analogy of a wind turbine.

Answer 2

Newton's third law governs in the turning of gears. Basically a torque is formed due to a coupling force. Now a large gear is joined with the pivoted point of the blades. When the blade turns the gear turns too turning other gears as well. 
Now why i said a large gear turning small gears is that for one rotation of a large gear a small gear does more rotation. So a small gust of wind turning the large gear to 1/100 th rotation turns the smaller gears to maybe 5 rotations.

Now to the amazing part. Getting to produce the electricity. The gears turning is connected to a dynamo. The dynamo is responsible for producing the required electricity. And that is the total analogy of a wind turbine.