The horse evenly pulls the carriage at a speed of 0.8 m / s, while acting with a force of 400

The horse evenly pulls the carriage at a speed of 0.8 m / s, while acting with a force of 400 (newton) directed horizontally [here and below g = 10 (newton / kg)]. Determine the mechanical work that the horse performs during an hour when the carriage moved in a straight line and evenly

Data: V (constant speed of a horse, carriage) = 0.8 m / s; F (acting force) = 400 N; t (duration of movement of a horse, carriage) = 1 h = 3600 s.

Mechanical work of a horse: A = N * t = F * V * t = 400 * 0.8 * 3600 = 1.152 * 10 ^ 6 J.

Answer: Within 1 hour, the horse had to perform mechanical work of 1.152 MJ.

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