Share

## A small town has decided to forego the use of electrical power and send energy through town via mechanical waves on ropes. They use rope wit

Question

A small town has decided to forego the use of electrical power and send energy through town via mechanical waves on ropes. They use rope with a mass per length of 1.50 kg/m under 6000 N tension. If they are limited to a wave amplitude of 0.500 m, what must be the frequency of waves necessary to transmit power at the average rate of 2.00 kW

in progress
0

Physics
5 months
2021-09-05T08:41:29+00:00
2021-09-05T08:41:29+00:00 1 Answers
3 views
0
## Answers ( )

Answer:the required frequency of waves is

2.066 HzExplanation:Given the data in the question;

μ = 1.50 kg/m

T = 6000 N

Amplitude A = 0.500 m

P = 2.00 kW = 2000 W

we know that, the average power transmit through the rope can be expressed as;

p = vμω²A²

p = √(T/μ)μω²A²

so we solve for ω

ω² = 2P / √(T/μ)μA²

we substitute

ω² = 2(2000) / √(6000/1.5)(1.5)(0.500)²

ω² = 4000 / 23.71708

ω² = 168.65

(2πf)² = ω²

so

(2πf)² = 168.65

4π²f² = 168.65

f² = 168.65 / 4π²

f² = 4.27195

f = √4.27195

f =

2.066 HzTherefore, the required frequency of waves is

2.066 Hz