Answer :

Mass of the metal, m = 2000 kg

Height to which the metal has to be lifted, h = 12 m


Time, t = 1 min = 60 s


Minimum power required to lift the given metal in the given circumstances


= Work done in lifting/Time taken


= mgh/t


= 2000×10×12/60


= 3920 W


= 3920/746 hp


= 5.255 ≈ 5.3 hp


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