Mass of pumpkin (m) = Weight / gravity = 7.5 N / 10 m/s² = 0.75 kg. Volume of water displaced (V_displaced) = 3/4 L = 0.75 L. Converting litres to cubic meters: 1 L = 0.001 m³. So, V_displaced = submerged, Volume of pumpkin (V_pumpkin) = V_displaced = 0.00075 m³. Density of pumpkin (ρ) = 1000 kg/m³.
A pumpkin weighs 7.5 N. On submerging it completely in water, ¾ L of water gets displaced. The acceleration due to gravity at the place where the pumpkin was weighed is 10 m/s². Which one of the following is the correct value of the density of the pumpkin ?
Asked in UPSC NDA 2 2024 · Topic: Physical Properties of Materials (Density and Specific Gravity)
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