Edexcel IGCSE Physics 复习笔记 1.4.3 Centre of Gravity
Centre of Gravity
The centre of gravity of an object (sometimes called the centre of mass) is defined as:
The point through which the weight of an object acts
For a symmetrical object of uniform density, the centre of gravity is located at the point of symmetry
For example, the centre of gravity of a sphere is at the centre
The centre of gravity of a regular shape can be found by symmetry
The centre of gravity of an irregular object can be found by locating its balance point
A broomstick has a centre of gravity slightly closer to the head of the broom since there is more mass located there
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