What should be the power of an engine required to lift 90 metric tonnes of coal per hour from a mine whose depth is 200m?

What would be the power of an engine required to lift 90 metric tonnes of coal per hour from a mine 200 m deep g=9.8 m/s^2 .

Find the power of an engine which lifts 90 metric tonnes of coal per hour from a depth of 200m.

What is the power of an engine which can lift 20 metric tonne of coal per hour from a 20-m deep mine?

What is the power of an engine which can lift 20 metric tonne of coal per hour from a 20-m deep mine?

Calculate the power of an engine required to lift 10^5 kg of coal per hour from a mine 360 m deep.

What is the power of an engine which can lift 20 metric ton of coal per hour from a mine 30 metres deep ?

Calculate the power of an engine required to lift 10^(5)Kg of coal per hour from a mone 360 m deep (Take g=10 m s^(-2) )

(a) What is the power of an engine which can lift 600 kg of coal per minut from a mine 20 m deep ? (b) A 2kW motor pumps out water from a well 10m deep. Calculated the quantity of water pumped out per second.

What is the power of an engine required to move a train of mass 400 metric tons with a speed of 36 km/h, on a level track, if the force of friction is 10 N/metric ton?