Description
Wooden wheel-and-axle simple-machine model on a 9
75 inch inner
heating the bar until it no longer passes through the opening and contraction returns it
equipping a class for compound-pulley and multi-rope mechanical-advantage experiments
Hand-cranked cam turning against both a straight follower and a lever follower
Alnico Cylindrical Magnet, 37 x 9mm Material_Copper Wooden wheel-and-axle simple-machine model onPink dots mark opposing poles on this 37 x 9mm Alnico cylinder pair, supplied with steel keepers and a cardboard storage box for sustained field strength between hands on experiments.
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