Question

The mass of a body is 70 kg. When completely immersed in water it displaces 13500cm3 of water. What is the relative density of the rubber ball?

Answer 1

Answer:

5.1

Explanation:

density =mass/volume

=>70/13.5m³

=>5.1 kg/m³

relative density=density of substance/density of water

=5.1/1

=>5.1

Answer 2

Given

✭ Mass of the body = 70 kg

✭ When immersed in water it displaces 13500 cm³

To Find

◈ Relative Density?

Solution

Relative Density is given by,

Mass of Substance

Density Of water

• Mass of the Substance = 70 Kg
• Weight of water displaced = 13500 cm³ = 1.35 × 10⁻² m

Density of a substance is given by,

Mass

Volume

Substituting the given values,

➝ 70/1.35×10⁻²

➝ 0.51 kg/m³

Now substituting this in the formula to find realative density,

➳ 70/0.15

➳ 140 [Approx]

☯ Know More

☆ Archimedes Principal

When a body gets immersed completely or partially in some fluid, then it will experience an up ward force which is equal to the weight of the fluid that it displace

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