Record the weight of the metal bob in air.Take a metal bob, tie thread to it and suspend on the hook of the spring balance.
Find the weight of solid metal bob in air: Study the spring balance, its scale and its least count.Take an iron stand and suspend a spring balance to it.Find the zero error and least count of spring balance: Archimedes’ Principle: When a body is immersed fully or partially in a fluid, it experiences an upward force that is equal to the weight of the fluid displaced by it.Ī spring balance, a metal bob, a cotton thread, an overflow can, a glass beaker, tap water, salty water, an iron stand.ġ.How much will be this upward force/buoyant force depends on the density of liquid in which it is immersed. Weight of the body when immersed in liquid = W 2 The body loses some weight when immersed in fluid, it can be found as follows:.Weight of liquid displaced = Volume x Density x g (acceleration due to gravity).Mass of liquid displaced = Volume x Density The mass of liquid displaced can be measured as:.The volume of liquid displaced = total volume of the solid.When a body is immersed in water or liquid, the body displaces some liquid.Weight of a body = Mass x acceleration due to gravity W = mg.Unit = N/m 2 or Nm -2 This unit (Nm -2)is also called Pascal, Pressure: The thrust per unit area is called pressure.Thrust: The force acting on a body perpendicular to its surface is called thrust.Buoyancy: The upward force exerted by fluids on any body is called the buoyant force and this phenomenon is known as buoyancy.Fluids: Gases and liquids flow and are thus called fluids.strongly salty water, with the weight of water displaced by it by taking at least two different solids.To establish the relation between the loss in weight of a solid when fully immersed in
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