Fundamental frequency =490−420=70Hz
70=2L1μT
⇒70=2L16×10−3540
⇒L=2×70190×103=140300
⇒L≈2.14m
A wire of length L and mass per unit length 6.0×10−3kgm−1 is put under tension of 540N. Two consecutive frequencies that it resonates at are: 420Hz and 490Hz. Then L in meters is :
Held on 9 Jan 2020 · Verified 6 Jul 2026.
2.1m
1.1m
8.1m
5.1m
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