Physics A-Level
Inverse-square law for point masses
What Inverse-square law for point masses means in Physics A-Level, as defined for OCR.
Definition of Inverse-square law for point masses
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Reference: OCR
For a point mass or uniform sphere of mass M, g = GM/r², where r is the distance from the centre.
Topics that use Inverse-square law for point masses
- Point and spherical masses (OCR A-Level)
Related terms
- Critical damping
- Direction of gravitational force
- Escape velocity
- Field
- Field strength and line spacing
- Geostationary orbit
- Gravitational field outside and inside a sphere
- Gravitational field strength
Using Inverse-square law for point masses in the exam
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