A tractor pulls a plough through a field of dry loose dirt. The plough creates a furrow by pulling a blade through the field. The plough has 7 blades and so can plough 7 furrows at once. Each plough need to be 4 cm deep and 12 cm wide. The plough can be modelled as a blade with an angle 26 deg to the surface of the field. Given that the tractor ha solutionspile.com

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A tractor pulls a plough through a field of dry loose dirt. The plough creates a furrow by pulling a blade through the field. The plough has 7 blades and so can plough 7 furrows at once. Each plough need to be 4 cm deep and 12 cm wide. The plough can be modelled as a blade with an angle

26\deg

to the surface of the field. Given that the tractor has a velocity of 32 kph and that dry loose dirt has a density of

1220((kg))/(m^(3))

. Assume that the tractor is moving in the negative

\times

direction. Calculate the total force required by the tractor to pull the plough, write your answer, in N , to 3 significant figures.

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