Jawabanmu

2014-08-14T13:22:29+07:00
L=2m =200cm
F=16N
f=50Hz
5 perut = 5/2λ

5/2λ=200cm
λ=80cm=0.8m

v=λ x f 
=0.8 x 50
=40m/s

V= \sqrt{ \frac{F}{ \frac{m}{L} } }
40= \sqrt{ \frac{16}{ \frac{m}{2} } }
40= \sqrt{ \frac{32}{m} }
1600= \frac{32}{m}
m=0.02kg =20gr
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