Two plates are set up horizontally, 4.1 cm apart, one above the other as shown in Fig. 1. The upper acrylic plate has a total of 405 small drilled holes. A fine stainless steel wire is inserted through each hole and adjusted so that one end of the wire is 1.8 cm above the lower wooden plate. The other end of the wire is taped to the upper plate and connected to the positive terminal of the power supply.

Topics
Newtonian mechanics
1.
YAGAMI Corp., 3-2-29, Marunouchi, Naka-ku, Nagoya-shi, 460-0002 Japan.
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© 2006 American Association of Physics Teachers.
2006
American Association of Physics Teachers
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