Science

A table, with four legs, weighs 5 N. The area of contact of one of its leg with the ground is 2.5 x 10-3 m². A man, with a mass of 9 kg, sits on the centre of the tabletop. What is the total pressure exerted on the ground by the table with the man on it?

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  1. Total force on 4 legs
    =5 N + 9*9.8 N
    = 93.2 N

    Area of contact of each leg
    = 2.5*10-3

    Pressure on each leg
    = 93.2/(4*2.5*10-3
    = 9320 N/m²
    = 9320 Pa (pascals)

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