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Igor is moving a 72 kg wooden box across the lab. To do so, uses a...

Igor is moving a 72 kg wooden box across the lab. To do so, uses a rope that make an angle of 35 degrees with the horizontal, pulling with a forces of 95 N to move the box along the horizontal a distance of 5.0 m at a constant speed. How much work is done bu Igor?

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Answer #1

Let the work done by Igor is W.

The horizontal component of the applied force is FH.

The applied force is F=95 N.

The distance covered is d=5.0 m.

The horizontal force is

  

The work done by Igor is

  

  

  

The work done by Igor is 389.097221 J or 389.1 J approx.

  

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