jacqueaLaur
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A worker uses a cart to move a load of bricks weighing 680 N a distance of 10 m across a parking lot. If the worker pushes the cart with a constant force of 209 N, what amount of work does he do?

Respuesta :

MissPhiladelphia
Work= Force x Distance = 220 N x 10 m = 2200 N.m = 2200 J
Work= 2200 J
ibranoguera

Answer:

The answer is 2090 Joules

Explanation:

There are several things we need to assume in order to explain this:

  • The cart and the load it carries will act as a unit load, meaning it behaves like a dot of 680N
  • There is no friction between the cart and the floor
  • The force applied by the worker is perpendicular to the floor.
  • The floor is leveled

I know this sounds like over-complicating things, but bear with me.

We make all those assumptions because the formula for Work is:

[tex]W=F*d[/tex]

Work would be the net sum of Forces (thus the assumptions made before) times the distance (d).

W = F * d = 209 N * 10 m = 2090 Nm = 2090 J

J is Joules, the measuring unit of work

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