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Scan this QR code to get the link lesson plan.

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Scan this QR code to get the link lesson plan.

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For the Physical Science B.Ed students.

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To know more about buoyancy...

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Isn't the buoyancy the same as the loss of weight experienced in water?

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Isn't the buoyancy the same as the loss of weight experienced in water?

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In order to calculate the buoyancy experienced by a substance immersed in a fluid, it is enough to find out the loss of weight of the substance in that fluid.

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From the figures record your inferences in the below table.

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Piece of metal calibrated using spring balance.

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Piece of metal calibrated using spring balance.

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Weighted in air and water.

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Take a piece of stone and a piece of metal almost the same size. Find out the weight of each in air using a spring balance calibrated in newton. Then find the weight of each of them when immersed in water.

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When a body is immersed completely or partially in a liquid, the liquid exerts an upward force on the body. This force is buoyancy.

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A body situated in liquid experiences two forces:

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A body situated in liquid experiences two forces:

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1. The weight of the body acting downwards.
2. The buoyancy, acting upwards on the body.

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Liquid exerts an upward force on a body placed in it. This force is buoyancy. It is exerted not only by liquids but also by gases.Liquids and gases together are generally called fluids.

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When an object in water is lifted, its weight appears diminished when compared to that in air. What can be the reason?

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Take water in a beaker. Place a tightly closed bottle on it. The bottle appears to be floated on the surface of water. Now try to immerse it in the water. Don't you have to apply a force now?
Can liquids exerts an upward force?

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Don"t you experience a loss of weight while lifting an object from water?..