Question

Draw a diagram of Balance spring write some function?

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Answer 1

$\rm{ \red{functions \: of \: spring \: balance : - }}$

Main uses of spring balances are to weigh heavy loads such as trucks, storage silos, and material carried on a conveyor belt. They are also common in science education as basic accelerators. They are used when the accuracy afforded by other types of scales can be sacrificed for simplicity, cheapness, and robustness. A spring balance measures the weight of an object by opposing the force of gravity acting with the force of an extended spring.

Answer 2

Required Answer :

$\large\underline{\rm\underline{Procedure}}$:

(i) Find weight of an object (glass stopper) in air with the help of spring balance.

(ii) Keep the overflow jar on a wooden block.

(iii) Keep filling the overflow jar till water starts flowing.

(iv) Keep a measuring cylinder at the nozzle of jar.

(v) Now, put this is spring balance hung with glass stopper, fully immersed in water. Some water will overflow in the measuring cylinder. Find the amount of water controlled in the measuring cylinder.

(vi) Note the weight of this glass stopper in water.

(vii) Repeat the steps with a piece of iron.

(viii) Repeat the steps with both the objects in brine (saturated solution of salt in water).

$\large\underline{\rm\underline{Conclusion}}$: Weight of displaced water is equal to the weight of object in tap water or brine.

$\large\underline{\rm\underline{Precautions}}$:

(i) Spring balance should be accurate.

(ii) Measuring cylinder taken should be dry.

(iii) When the object is immersed in water, the water collected in measuring cylinder should not overflow (not even a single drop).

(iv) Object immersed in water should not touch the walls of the container.

(v) Weight decreased in water should be measured from spring balance only once the object is stable.

(vi) Lower meniscus of colourless solution (Water/Brine) should be read.

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[ NOTE : Diagram is in the attachment. ]

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