Question

小易

第五題a求解
真的看不懂答案……
plz

twire bent into the shape ofa''V

tofastring fxed at both ends  Assuming that

ring vibrates at its fundamental frequency 贍

amplitude 4 of the standing wave will the Wire |
With the String?

“18 placed

    
   
    
  
   
    
   
   

at what

COntact

4 (1 heG(C96 HZzZ) stringonaguitaris 64 cm long. Locate
 fhe position of the frets for the following notes: A (220 Hz):
B (247 HHZ); C (262 Hz); D (294 Hz).                   凡
殊軸 Consider a transverse wave of small amplltude on a
/ string。 Under the action of the wave, the String 1S moved

ipward, as shown in Fig. 16.33. (a) Show that the power
supplied by the left side to the right side is

220
必避 人

(b) Use the expression y(x, 仿 三 4 sin(/x 一 o/) to find the
average power transmitted along the rope. Compare your
reSUIt with Eq. 16.16.

 

FIGURE 16.33 Problem 5.

t, (1 Arope of mass 2 and length 工 hangs 全
that the time needed for a pulse to travel from
end to the support is 了三 2V7/g.

that the 1nSta taneou  power tr anSmitted through
| )                       ntan    S

inimum where 》 和=

i                    ity 和 is undera
ar masS denS1           r
6 and 品 0nd and free to slide on

  

\泊
11. (Da)
了 fixed
that th'

where
freque
ing wa

(TryP
EEUA
tenSloi
lnltial
the asS:
the aw
5$0%?
JAeU 1I
may

14.(ID A

Answer 1

鯉魚王

F指斜向張力
∂y/∂t 垂直方向速度
∂y/∂x 斜率
功率P=Fv