Answer:
Mass
of cuboid = Volume x Density
= (4 cmx 7 cmx 10 cm) x 8 g /cm3
( Volume of cuboid )
= 2240 g= 2.24 kg
Force applied by the cuboid on the sand = mg
Pressure will be minimum when area of the face of cuboid
kept on sand is maximum i.e., in the case of face with 7 cm x 10 cm.
Area of the face = 7 cm x 10 cm
Minimum pressure
Pressure will be maximum when area of face of cuboid kept
on the sand is minimum i.e., in the case of face with 4 cm x 7cm.
Area of the face = 4 cm x 7 cm
Maximum pressure
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