The strings should have a small weight (like a washer) attached too their ends, so that they hang downward, and the strings should have lengths of 5 cm., 20 cm., 45 cm., 80 cm., and 125 cm., respectively.
(The strings; should have respectively; a small weight (like a washer) attached too their ends) (they; hang; downward) (the strings; should have; lengths of 5 cm)
The strings they the strings
should have respectively hang should have
a small weight (like a washer) attached too their ends
downward
lengths of 5 cm