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School-college Physics Notes: Thermal energy 5.3 Density of a solid measurement

Density and particle theory: 5.3

How to measure the density of an regular shaped solid object

- apparatus, method and calculation

Doc Brown's Physics exam study revision notes

5.3 Measuring the density of an regular shaped solid object and calculation

Again the block of material is weighed on the electronic balance (2b) on diagram.

If the material is a perfectly shaped cube or rectangular block (solid cuboid), you can then accurately measure the length, breadth and height and calculate the volume: V = l x b x h.

If it is a regular solid shaped cylinder you need to work out the surface area of the end and multiply this by the length or height of the cylinder.

Area of a circle = πr2, where π = pi = 3.142 and r = radius of the cylinder.

Therefore volume of cylinder: V = πr2l

Then apply the density formula:  ρ = m ÷ v

Keywords, phrases and learning objectives for density

How to measure the density of an regular shaped solid block object apparatus method procedure calculation solid cylinder object of symmetrical regular shape

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