A hydraulic fork lift raises a mass of 8.9 ton at a speed of 0.5 m/s through

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Question:

A hydraulic fork lift raises a mass of 8.9 ton at a speed of 0.5 m/s through a height of 13.5 mn once in 1.6 min, being working from an accumulator which is fed by a pump having an efficiency of 80%. If the pressure of the water is 70 bar and the friction losses of the lift 30% find

The power required to drive the pump,

The minimum capacity of the accumulator.