Question

a. 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?

Answer 1

$Power = forces \times velocity \\ P = 18000 \times 8 \\ P = 144000 = 144 \;kW 1 \;kw = 1.3 \; horsepower \\ 144 \;kw = 1.3 \times 144 = 187.2 \;hp$