Investigation of the variation of the fundamental frequency of a string with tension

Label this diagram

a - paper rider

b - tuning fork

c - Newton balance

d - tension adjusting screw

e - bridge

f - sonometer

Demonstrate the method of this experiment • 1

• Place paper rider on string

• Strike tuning fork and place on bridge

Demonstrate the method of this experiment • 2

• Turn screw to adjust tension until resonance occurs and paper rider falls off

• Strings frequency matches the tuning forks

Demonstrate the method of this experiment • 3

• Measure T from the Newton balance

• Repeat with other tuning fork frequencies

Define the headings used to graph this experiment

• y - f - Hz

• x - T rooted - N1/2

Define 2 precautions that are associated with this experiment • 1

Keep rider at the centre - where the antinode is

Define 2 precautions that are associated with this experiment • 2

Kee string length constant by not moving bridge

Label This Formula

Fundamental Frequency of Strings

f - fundamental frequency

l - length

T - tension

u - mass per unit length

What page of the log tables can you find the Fundamental Frequency formula?

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