# Question #ad131

##### 2 Answers

#### Answer:

#### Explanation:

Operation of specific gravity meter is based on Archimedes' principle.

It states that when a solid body is suspended in a fluid it experiences an upward force which is equal to the weight of the fluid displaced by the submerged part of the body.

The depth is read off the scale, as shown in the figure below:

When submerged to the marking

The position of the marking of

Assuming that the

Let

Its volume which is also Volume of water displaced

As the tube is in equilibrium (upwards thrust

Weight of tube

Weight of tube

where

Now the meter floats with

Weight of the liquid displaced

We know that SG

#### Answer:

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#### Explanation:

We know that the density of water at

The given uniform tube of length 10cm has also sp.gravity 1.0.

If the area of cross section of the tube be

And its weight becomes

If it floats in water immersing x cm length in water,then weight of water displaced by it will be

By Archimedes principle

So

Again it floats in the given liquid keeping 6cm immersed.

So the weight of displaced liquid will be

,where

Now applying Archimedes principle we have