A measure of how much matter an object contains

The force on an object due to gravity

volume = length x breadth x height = 5 x 5 x 5 = 125 cm3

Volume of material = 125 – 25 = 100 cm3

Density = mass/volume = 270/100 = 2.7 g/cm3

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The centre of gravity is the point where all the weight appears to act

• The block will topple • as the vertical line through its centre of gravity falls

outside its base

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clockwise moment = anticlockwise moment5 x 5,000 = 2 x F25,000 = 2FF = 12,500N

2.0 m

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