Question 10 of 30
The advantage of using a purchase is that for a given size of wire rope
A
smaller weight can be lifted
B
A greater weight can be lifted
C
The same weight can be lifted
D
The frictional forces are reduced
Advertisement
Answer & Explanation
The correct answer is Option B: A greater weight can be lifted.
A purchase, which is a system of ropes and pulleys (blocks), provides mechanical advantage. This allows a greater weight to be lifted with less effort than would be required with a single rope, for the same size of rope.