Question

Indicate the ideal mechanical advantage for each of the following machines:

a. A single movable pulley
b. Block and tackle with three load-bearing ropes, plus a fourth rope being pulled in a downward direction

Answer 1

The ideal mechanical advantage for a single movable pulley is 2, while the ideal mechanical advantage for a block and tackle with three load-bearing ropes and a fourth rope being pulled downward is 4.

Step-by-step explanation:

In a single movable pulley, the ideal mechanical advantage (IMA) is 2. This means that the force applied to the pulley is twice the force applied to the load.

In a block and tackle with three load-bearing ropes plus a fourth rope being pulled in a downward direction, the IMA is 4. This means that the force applied to the pulley is four times the force applied to the load.