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A string of total mass 100g and length 2m is under tension due to the weight of an aboject of mass 8kg. If the resulting wave un the string has an amplitude of 6m and frequency 60hz the power that must be supplied to string is

A string of total mass 100g and length 2m is under tension due to the weight of an aboject of mass 8kg. If the resulting wave un the string has an amplitude of 6m and frequency 60hz the power that must be supplied to string is

Grade:12

1 Answers

swastik
35 Points
3 years ago
Power transmitted in a wave = 1/2 x mass/length x frequency^2 x amplitude ^2 x velocity..... In this question velocity = (tension in string x length /mass)^1/2... So in this question, v= 40, so power = 129600 joules / second

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