Question

A graduated measuring cylinder is filled with 60 cm3 of a liquid. The measuring cylinder along with the liquid weighs 100 g. The measuring cylinder alone weighs 70 g. Find the density of liquid.

Show your calculations

Answer 1

Answer:

Let d be the density of fluid.

So , Initial reading of balance, F1=30dg N

After the level reaches 50cm3 

Final reading of balance , F2=50dg N

Given that difference between final and initial reading is 30g

i.e, F2−F1=30 g

⟹50dg−30dg=30g

⟹20dg=30g

⟹d=20g30g

⟹d=1.5g/cm3

Answer 2

Given : A graduated measuring cylinder is filled with 60 cm³ of a liquid. The measuring cylinder along with the liquid weighs 100 g. The measuring cylinder alone weighs 70 g.

To  Find  : the density of liquid.

Solution:

measuring cylinder along with the liquid weighs 100 g

The measuring cylinder alone weighs 70 g.

Hence weight of liquid  = 100 - 70 = 30 g

Volume of liquid = 60 cm³

Density = mass / Volume

=> Density = 30 / 60

=> Density = 0.5  g/cm³   or  500 kg/m³  

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