Physics Alevel uncertainties question help!!! Watch

Lelux
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"the diameter of a solid sphere is measured with vernier calipers to be 4.73 ±0.01cm and its mass is measured to br 429.2±0.01g"

they ask us to find the percentage uncertainty of the density of the sphere.

ive been on this question for the past 2 hours i think i need help
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Brain Damage
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density = mass/volume
density = m/(4/3πr3)

4/3π has no uncertainty, so ignore that part.
You're left with m/r3 for determining uncertainty.

Start by finding the percentage uncertainty in the mass and the radius. r is cubed, so it has triple the percentage uncertainty of r. Then it's m/r3 so you add together the percentage uncertainties of m and r3.

This thread may help if you don't understand: https://www.thestudentroom.co.uk/sho....php?t=2661762
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