The Way Things Work. Inclined PlanesThe Way Things Work. Inclined Planes
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DVD, 2003
Current format, DVD, 2003, , All copies in use.
DVD, 2003
Current format, DVD, 2003, , All copies in use. Offered in 0 more formats
Dropping boulders off a tower makes gravel for the Mammoth Island roads, but lifting the boulders up to the top of the tower is difficult and dangerous. A young Mammoth Islander suggests that rolling boulders up a ramp would be easier than hauling them up a tower.
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