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