We have frequently enhanced our department's laboratory experiment involving standing transverse waves in a taut horizontal cord. In addition to the standard experiment, students in these labs investigate the surprising concept that the acceleration of a pulse in a chain hanging vertically is a constant and is equal to half the acceleration of gravity.
REFERENCES
1.
I. M.
Freeman
, “Propagation of a transverse pulse along a hanging chain
,” Phys. Teach.
15
, 545
(Dec. 1977
).2.
D.
Halliday
and R.
Resnick
, Fundamentals of Physics
, 2nd ed. (Wiley
, New York
, 1981
), pp. 313
–314
.3.
J.
Satterly
, “Some experiments in dynamics, chiefly on vibrations
,” Am. J. Phys.
18
, 405
–416
(Oct. 1950
).4.
R. E.
Gibbs
, “Standing waves on a hanging rope
,” Phys. Teach.
36
, 108
–110
(Feb. 1998
).5.
E. J.
Routh
, The Advanced Part of a Treatise on the Dynamics of a System of Rigid Bodies
(Dover
, New York
, 1955
), pp. 403
and 407.6.
H.
Bailey
, “Motion of a hanging chain after the free end is given an initial velocity
,” Am. J. Phys.
68
, 764
–767
(Aug. 2000
).© 2013 American Association of Physics Teachers.
2013
American Association of Physics Teachers
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