Question

A block-and-tackle is a machine that uses pulleys to help lift heavy items. A person pulls on one end of a rope

with an effort force. The other end is attached to the item, or load. The table shows the results of testing several
block-and-tackle designs to pull the load one meter off the ground.
Which design has the GREATEST efficiency?

Answer 1

On USA test prep the answwer to this question would be B

- (Block and tackle plot B)

Step-by-step explanation:The answe is not A, C, or D