Depending on how there used, pulleys can have different uses. One use for pulleys is that they can... A. Increase the total work needed
B. Decrease the total work needed
C. Change the direction of a force
D. Roll things down a ramp​

Explanation:

Depending on how there used, pulleys can have different uses. One use for pulleys is that they can...

A. Increase the total work needed

B. Decrease the total work needed

C. Change the direction of a force

D. Roll things down a ramp

ans D. Roll things down a ramp

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