1. A farmer uses a pulley system to raise a 225-N bale 16.5 m. A 129-N force is applied by pulling a rope 33.0 m. What is the mechanical advantage of the pulley system?

2. A laborer uses a lever to raise a 1250-N rock a distance of 13.0 cm by applying a force of 225 N. If the efficiency of the lever is 88.7%, how far does the laborer have to move his end of the lever?

Find the mechanical advantage of each pulley system.

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