An aquarium is 12 m long 4 m wide and 2 m deep is full of wa

Solution

total volume=12 *4 *2=72m^3 density of water=1000kg/m^3 mass=vol.*density mass=72000 kg thus total force on it F=72000*10=720000N total displacement of force=2m thus work done=F*d=720000*2=1440000 J work done=1.44*10^3 kJ