This document discusses standing waves, which occur when two waves of equal amplitude and wavelength traveling in opposite directions interfere. It defines nodes as points of no motion and antinodes as points of maximum amplitude. The distance between a node and antinode is always λ/4, where λ is the wavelength. Key equations are provided for calculating the wavelength, frequency, and location of nodes and antinodes for standing waves on strings. Examples are given for standing waves on guitar strings and how changing the tension affects the fundamental frequency.
Working through the concepts of constructive and destructive interference patterns of two waves, these slides include questions that serve to clarify interference conceptually and mathematically.
Working through the concepts of constructive and destructive interference patterns of two waves, these slides include questions that serve to clarify interference conceptually and mathematically.
This Learning Object 6 is based on Standing Waves. It gives a detailed description about what a standing wave is and how standing waves are formed. As well, the equations necessary to break down standing waves to get the amplitude, nodes, antinodes, etc are all included. Furthermore, a practice question is included along with a detailed solution to solve the problem with ease.
Physics 101 LO6 which explains the components of standing waves, generates its equation, and tests the understanding of students by creating a practice problem with a worked solution in the end.
The learning object focuses on the basics of standing waves and the formulas associated with the concept. There is a simple example at the end of the powerpoint and many formulas and descriptions along the way.
My Learning object describes what standing waves are, how to determine where the nodes and antinodes of a standing wave are and also about the fundamental and resonant frequencies. Their is a variety of questions from multiple choice, to true and false and also a problem solving question.
CBSE Physics/ Lakshmikanta Satapathy/ Wave Motion Theory/ Reflection of waves/ Traveling and stationary waves/ Nodes and anti-nodes/ Stationary waves in strings/ Laws of transverse vibration of stretched strings
This Learning Object 6 is based on Standing Waves. It gives a detailed description about what a standing wave is and how standing waves are formed. As well, the equations necessary to break down standing waves to get the amplitude, nodes, antinodes, etc are all included. Furthermore, a practice question is included along with a detailed solution to solve the problem with ease.
Physics 101 LO6 which explains the components of standing waves, generates its equation, and tests the understanding of students by creating a practice problem with a worked solution in the end.
The learning object focuses on the basics of standing waves and the formulas associated with the concept. There is a simple example at the end of the powerpoint and many formulas and descriptions along the way.
My Learning object describes what standing waves are, how to determine where the nodes and antinodes of a standing wave are and also about the fundamental and resonant frequencies. Their is a variety of questions from multiple choice, to true and false and also a problem solving question.
CBSE Physics/ Lakshmikanta Satapathy/ Wave Motion Theory/ Reflection of waves/ Traveling and stationary waves/ Nodes and anti-nodes/ Stationary waves in strings/ Laws of transverse vibration of stretched strings
It's about optic wave. Project given by my teacher because i had not attended her class for long time (for a reason), and skipped so many assignments. It's not so details, but hopefully it will be useful.
This LO gives you a simple easy to understand explanation of what a standing wave is (video included) and how it is different from a travelling wave. Afterwards a few sample questions are given to apply knowledge.
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2. WHAT IS A STANDING WAVE?
• When two harmonic waves of equal amplitude,
wavelength, frequency are moving in opposite direction
3. WHAT IS A STANDING WAVE?
Node = no motion at 0 amplitude
Antinode = maximum possible amplitude of 2
The node and antinode are λ/4 far apart.
λ/4
4. KEY EQUATIONS
• D(x,t) = 2Asin(kx)cos(ωt)
• Location of node
• When sin(2πx/λ) = 0, x = nπ
• Location of antinode
• When sin(2πx/λ) = ±1, x = (n+1/2) λ/2
5. KEY EQUATIONS
• Standing Wave on a string
• Fixed end of string -> length (L) = x
• λ = 2L/n where n = number of antinode in integers
• f = v/λ = nv/2L = n/2L * √T/μ
• fn = nf1 where f1 = fundamental frequency of a string
6. • Application of standing wave on instruments
• Both end closed/opened
• λ = 2L/n
• f = nv/2L = n/2L * √T/μ
• One end open and another one closed
• λ = 4L/n
• f = nv/4L = n/4L * √T/μ
KEY EQUATIONS
7. QUESTION 1
• A guitar string oscillates in a standing wave pattern after a
person plays with it.
• D(x,t) = 1.5sin(0.6x)cos(20πt)
• 1. What is the wavelength and the frequency?
• 2. What is the distance between two consecutive nodes?
8. SOLUTION
1. The wavelength (λ)
• D(x,t) = 1.5sin(6x)cos(30πt)
• D(x,t) = 2Asin(kx)cos(ωt)
• k = 2π/λ, λ= 2π/k = 2π/6 = 1.05 m
The frequency (f)
ω = 2πf , f = ω/2π = 30π/2π = 15 Hz
9. 2. The distance between two consecutive nodes
• λ = 2L/n where n = 1
• When there is one antinode, there are two nodes at both
ends
• The distance between two nodes is L.
• L = λ/2 = 1.05 m / 2 = 0.525 m
SOLUTION
11. QUESTION 2
• The guitar string has the length of 1.5m long fixed at both ends.
• It has a frequency of 300 Hz. The tension is increased by 10%.
• What is the new fundamental frequency of the string.
12. SOLUTION
• f = nv/2L = n/2L * √T/μ
• When the tension is increased by 10%, the T will increase to
1.1T
• f = n/2L * √T/μ = ½(1.5m)*√T/μ = 0.75√T/μ = 300 Hz
• f = 0.75√1.1*T/μ = 0.75√T/μ * √1.1 = 300 * √1.1 = 315 Hz