Question

A sample of an unknown material weighs 260 N in air and 200 N when immersed in alcohol of specific gravity 0.700. a) What is the volume? b) What is the density of the material?

Answer 1

First find the density of alcohol with specfic gravity 0.7

Specific Gravity =Density of fluid/Density of water

0.7 =/1000

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The material weigh 260N in air and 200N when immersed in alcohol

When immersed in alcohol the material experienced a upward force called Buoyant force

that is why it weigh less

so Buoyant force =260 -200 =60N

Buoyant force =Density of Fluid* Volume of Material *acceleration gue to gravity

Buoyant force =

a)ANSWER: ​

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b)Density of material

Density =Mass/Volume

Given weight in air=260N =mg

so mass =26.5kg

Density =26.5/8.74*10^-3

ANSWER :Density=3032.445kg/m³

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