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A beaker full of water is suspended from a spring balance. Will the reading of the balance change: (a) if a cork is placed in water? (b) if a piece of heavy metal is placed in it? Give reasons for your answer.

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A beaker full of water is suspended from a spring balance. Will the reading of the balance change:

(a) if a cork is placed in water?

(b) if a piece of heavy metal is placed in it? Give reasons for your answer.

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(a) The reading of spring balance will not change if a cork is placed in water because cork, being lighter than water, floats in water.

(b) The reading of spring balance will change if a piece of heavy metal is placed in water because heavy metal being denser than water, sinks in water.

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