About Machine Shop
Simple machines trade a longer push for a smaller force. In the Lever round children move the fulcrum along a plank to lift a heavy rock with a small push. The rule is your push times your distance against the rock's weight times its distance, and the best answer lifts the rock as high as possible while still being light enough to push.
In Pulleys, each rope holding the load shares the weight, so four ropes mean a quarter of the force. But you pull four times as much rope, and some puzzles run out. In Gears, a gear with half as many teeth turns twice as fast, touching gears turn opposite ways, and a middle gear flips the direction back.
Spot it names the six simple machines in everyday things: a seesaw and a claw hammer are levers, a flagpole uses a pulley, a ramp and a zigzag mountain road are inclined planes, a knife is a wedge, a light bulb base is a screw, and a doorknob is a wheel and axle. The puzzles use a simple model without friction.
Best for ages 8+
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