The tractor pulls the plow evenly with a force of 10 kN. In 10 minutes, it covers a path equal to 1200 m.

The tractor pulls the plow evenly with a force of 10 kN. In 10 minutes, it covers a path equal to 1200 m. Determine the power developed by the engine of the tavern.

F = 10 kN = 10000 Newton – the force that the tractor applies when pulling the plow;

s = 1200 meters – the path traveled by the tractor during the time interval t;

t = 10 minutes = 600 seconds – time span.

It is required to determine W (Watt) – the power developed by the tractor.

Let’s find the work that the tractor does:

A = F * s = 10000 * 1200 = 12,000,000 Joules.

Then the power developed by the tractor engine will be equal to:

W = A / t = 12,000,000 / 600 = 120,000 / 6 = 20,000 Watts = 20 kW.

Answer: the tractor engine develops a power equal to 20 kW.