1) Design a gear system using 12, 34 and 36 teeth gears that achieve a gear ratio of 13.5:1 and has the top and bottom gear spinning in opposite directions.
2) For a pulley system with 8 supporting strands, how far would you have to pull the rope to lift a 125 kg object 1.0 meters off the ground? What if the pulley system were only 80% efficient?
5 answers