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Mahmood is lifting a bag of cement. He uses 5 N of force to lift the bag 20 meters. If Mahmood uses a machine to decrease the distance to 10 meters, he will ___.

decrease the amount of work done
increase the amount of work done
decrease the amount of force needed
increase the amount of force needed

Respuesta :

Answer;

Decrease the amount of force needed

Explanation;

  • A machine does not decrease the amount of work that is done. Instead, a machine changes the way in which work is done. Recall that work is the use of force to move an object.
  • Machines are used to make work easier by reducing the force needed. They do not decrease the amount of work.
  • Machines make work easier to do by decreasing the force required by increasing the distance over which the work is done.

Answer:

Decrease

Explanation:

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