Calculate the height through which a crane can lift a load of 4t , when its motor of 4HP operates for 10s. [Take g=10N/kg ]

Answer 1

1 HP = 745.6999 W
4 HP = 2982.7996 W

4t = 4000 kg

Use
mgh=PΔt
h=PΔt/mg
=2982.7996*10/(4000*10)
=0.75m approximately

Answer 2

S this is absolutely correct