A boy has 60 kg-wt. He wants to swim in a river with the help of a wooden log. If relative density of wood is 0.6. What is the minimum volume of wooden log ("Density of river water is "1000 kg//m^(3))

A boy has 60 kg-wt. He wants to swim in a river with the help of a woo

1.	A boy has 60 kg-wt. He wants to swim in a river with the help of a wooden log. If relative density of wood is 0.6. What is the minimum volume of wooden log ("Density of river water is "1000 kg//m^(3))
Answer» `6.66m^(3)` `150M^(3)` `(3)/(1)m^(3)` `(3)/(20)m^(3)` Solution :According to Archimedis PRINCIPLE, `(("weight of LIQUID"),("DISPLACED by body"))="up thrust"`