A man sits on a chair having 4 legs with an equal area of 10cm^2. If the mass of a man is 75 kg, calculate the pressure exerted on the ground.
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A large man sits on chair four - legged chair
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Given: A man sits on a chair having 4 legs with an equal area of 10cm^2. Mass of man is 75 kg.
To find: Pressure exerted on the ground
Explanation: Mass of man= 75 kg
Acceleration due to gravity= 10 m/s^2
Force exerted by man= 75*10
= 750 N
Area of 1 leg = 10 cm^2 = 10* 10^-4 m^2
Area of 4 such legs= 4* 10* 10^-4
= 4 * 10^-3 m^2
Pressure= Force/ Area
= 750/4*10^-3
= 187500 N
The pressure exerted on the ground is 187500 N.
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