1.

A cauboid of volume 20 mxx 10 m xx 5m has density3 kg m^(-3) .Find the maximum pressure exerted by cuboid on the surface .

Answer»


Solution :Density `= 3 kgm^-3`
Volume of cuboid `=1xxbxxh= 20 xx 10xx5 = 10^3 m^3`
Mass of cuboid
`="Density " xx "volume "`
`==3xx 10^3` kg
Weight of cuboid
`=mg = 3 xx 10^4 N`
`A_1= 200m ^2, A_2= 50m^2 `
`A_3= 100m^2`
Pressue `ALPHA 1/"Area"` that means the prosition of cuboid to GIVE maximumbottom PRESSURE is
`p=(3xx10^4)/(50)=0.6 xx 10^3= 600 pa`


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