Question

A book of mass 2 kg placed on a table of mass 20 kg. Bottom of each of four legs of table are in circular shape. If the pressure acting on ground due to table is 7000 Pa, then the radius of bottom of leg is​

Answer 1

In several Mahajanpad cities archaeologists have found rows of pots, or ceramic rings arranged one on top of the other. These are known as ring wells. These seem to have been used as toilets in some cases, and as drains and garbage dumps. These ring wells were usually found in individual houses.