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Reversible pendulum (physical pendulum)

Product No: P1003300

Principle

In the "Simple pendulum" experiment (Mechanics 5.2) the students became acquainted with the correlations between pendulum length and oscillation period of a thread pendulum. In the present experiment they should discover the special property of a reversion pendulum: there are two singular suspension points, at which the oscillation period is the same. The distance between them - the reduced pendulum length l_R - is larger than the distance "center of gravity - suspension point"; consequently, the pendulum must be reversed in order to hang it on the respective singular points*.
In this experiment the students should measure the oscillation period of a reversion pendulum, the suspension points for equal oscillation periods and from this data determine the reduced pendulum length.
Additionally, they should measure the oscillation period of a thread pendulum with a length which corresponds to the reversion pendulum's reduced pendulum length and compare it with the reversion pendulum's oscillation period.

Task

What property characterises a reversion pendulum?

Measure the time required for 10 oscillations of a reversion pendulum at different suspension points. From this data determine the respective oscillation periods.
Measure the time required for 10 oscillations of a thread pendulum with a pendulum length which equals the "reduced pendulum length" of the rod pendulum.

Materiallist (Excerpt)	Product	Amount
Support base variable	02001-00	1
Stop watch 4	03078-00	1
Lever	03960-00	1
Support rod, stainless steel, l = 600 mm, d = 10 mm	02037-00	1
Boss head	02043-00	1
Weight holder for slotted weights	02204-00	1
Slotted weight, 50 g, black	02206-01	1
Holding pin	03949-00	1
Slotted weight, 10 g, black	02205-01	1
Fishing line, l. 20m	02089-00	1
Measuring tape, l = 2 m	09936-00	1

Literature for this article als follows

Title	Product	Language
interTESS DVD Physik	01050-00
interTESS DVD Physik, Mechanik	01051-00
interTESS DVD, vollständige Version mit allen Versuchen Physik, Chemie, Biologie, Applied Sciences	01100-00
TESS advanced Physik Handbuch Mechanik 1-5	01158-01	DEU
TESS advanced Physics manual Mechanics 1 to 5	01158-02	ENG
TESS advanced Physique manual Mechanique 1-5	01158-03	FRA
TESS advanced Física manual Mecánica 1-5	01158-04	ESP