c. A certain tractor is said to be capable of pulling with a steady force of 18kN while moving at a velocity of 8.0m/s. How much power in kilowatts and in horsepower is the tractor developing under these conditions?
Answers
Given info : A certain tractor is said to be capable of pulling with a steady force of 18kN while moving at a velocity of 8.0m/s.
To find : how much power in kilowatts and in horsepower is the tractor developing under above conditions...
solution : power = force × speed
here force = 18 kN and speed = 8 m/s
so, power = 8 kN × 8 m/s
= 64kNm/s
= 64kW
therefore the power in kilowatts is 64 kW .
we know, 1 horsepower = 746 watt
so, power in horsepower = (64kW/746W)hp
= (64000/746) hp
= 85.8 hp
Therefore the power in horsepower is 85.8 hp.
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