Question

An empty plastic container has mass of 5kg and its volume is 50litre.what would be its total mass when it is filled up with cooking oil of relative density 0.85?

Answer 1

Given:

Mass, m = 5 kg

Volume, V = 50 L = 0.05 m³

The relative density of cooking oil = 0.85

To Find:

The total mass of the container filled with cooking oil.

Calculation:

- The density of cooking oil, d = Relative density × Density of water

⇒ d = 0.85 × 1000 = 850 kg/m³

- Mass of cooking oil = Density × Volume

⇒ M = d × V

⇒ M = 850 × 0.05

⇒ M = 42.5 kg

- Total Mass = Mass of empty cylinder + Mass of cooking oil

⇒ Total Mass = m + M

⇒ Total Mass = 5 + 42.5

⇒ Total Mass = 47.5 kg

- So, the total mass of the container filled with cooking oil is 47.5 kg.