Rohan needs to lift a bucket of cement weighing $120\text{ N}$. He uses a movable pulley system that reduces…
Rohan needs to lift a bucket of cement weighing $120\text{ N}$. He uses a movable pulley system that reduces the required effort force by half. How much effort force must Rohan apply to lift the bucket?
$240\text{ N}$
$120\text{ N}$
$60\text{ N}$
$30\text{ N}$
Solution
A movable pulley provides a force multiplier effect, reducing the required effort force to half the load weight ($120\text{ N} \div 2 = 60\text{ N}$).