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How do simple machines make work easier?

AThey add energy to the work.

BThey increase the force needed to work.

CThey reduce the speed of work.

DThey increase the distance over which a force is applied.

Verified Answer :

work is defined as force acting on an object in the direction of motion, a machine makes work easier to perform by accomplishing one or more of the following functions: transferring a force from one place to another, changing the direction of a force, increasing the magnitude of a force, or increasing the distance or speed of a force
D. They increase the distance over which a force is applied.

Answer:

D. They increases the distance over which force is applied.

Explanation:

Work is defined as the quantity which applied force in the direction of motion. According to the Jefferson's Lab there are the following methods which are adopt to make the work easier in performing:

  • By tranferring a force from a one place to another.
  • By changing the direction of force.
  • By increasing the force magnitude.
  • By increasing the distance or speed over the force is applied.

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