A machine's main purpose is:
A To increase the power used by decreasing the amount of time you have to do a certain work.
B To change the effort of the work by increasing the distance a force is applied or changing its direction.
To increase the force you apply by changing its direction or multiplying the distances it is applied.
DTo decrease the amount of work is done by increasing the distance a force is applied or changing its direction
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B To change the effort of the work by increasing the distance a force is applied or changing its direction.
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