CBSE Class 9: Archimedes' Principle Videos | Density and relative density

• why the pin sink and ship float?
• Why do we feel light on our feet when standing in a swimming pool with water up to our armpits ?
• what is density?
• When a piece of cork is put into the water it starts floating on the surface of water due to the upward buoyant force from water.
• you are provided with a piece of rock and common laboratory equipments.how will you proceed to find its density.  
• what are fluids?
• solution
  
• What is the unit of density?
• What happens if the bouyant force of liquid is equal to or greater than or less than the solid object which is to be immersed into the liquid
• what is the relationship between boyant force and displaced water

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