Question

Match these items.

1. changes direction of effort
block and tackle
2. input is ½ the distance
single movable pulley
3. system of pulleys
single fixed pulley

Answer 1

1 → single fixed pulley (changes the direction of the effort but gives no mechanical advantage)

2 → single movable pulley (halves the required force — the load moves half the distance of the rope pulled)

3 → block and tackle (a system of pulleys combined to increase mechanical advantage)