19:
pulley-wheels with rope wedge-two slopes sides screw-wrapped around a rod wheel-and-axle-rod in center of it lever- bar that moves a fulcrum fulcrum-point of a lever
8:
7:
14:
1:
45:
16:simple machines
36:
44:
43:
39:
38:
37:
35:
34:
33:
32:
28:
25:
22:
17:
12:
11:
5:
42:
40:
30:
15:
13:
10:
9:
6:
4:
3:
2:
41:
29:
26:
23:
20:
27:
24:
21:
18:
31:THE END′
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