Question

An iron cuboid has volume 100cm3.Find its volume in S.I unit . step by step explain​

Answer 1

Apparent weight of iron = Weight of iron in air - weight of iron in water

As we know , Density =

volume

mass

So mass of iron piece in air = (volume) (density) =(10

−4

)(7800)kg=0.78kg

Weight of iron piece in air=mg=7.8N

weight of iron piece in water = upthrust = Vρg = 10

−4

(1000)10N=1N

so apparent weight of the iron piece =7.8N−1N=6.8N

Answer:

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