Weight of a body is less in the mines. Why?
The weight of a body is less in the mines because when we move deeper the earth gravity decreases but our mass is always constant.
Write down the conclusion drawn from the coil (guinea) and feather experiment.
In the experiment, the 'g' of a feather and coin is not the same in the atmosphere but it is the same in a vacuum. In the atmosphere, feathers get accelerated slowly because of the upthrust of the air. However, in space or vacuum, there are no barriers. So, what is conclude is the 'g' in any body is not affected by the mass of the falling body.