Density
Physics: Cambridge International GCSE Supplement, topic 1.4.1
Density
Density is the mass of an object per unit volume. Density can be calculated using the formula: density = mass volume.
Density
- Density is given by ρ=m/V, where the ρ is the greek letter rho, not a p!
- m is mass, V is volume.
Upthrust
- An object floats in a fluid if the density of the object is lower than the density of the fluid.
- The force that keeps the object afloat is called upthrust.
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Law of Displacement
- The Law of Displacement says that an object completely submerged in a fluid (like water) will replace an amount of fluid equal to its own volume.
Test yourself on Density
Which of the following are true?
Which of these are true about calculating density?
Why did the air pockets inside the Titanic help it float before it hit the iceberg?