EM-831

Direct proportion

E Math · Secondary 3 · Hard · Direct proportion

The frequency

f

of a note produced by a string is directly proportional to the square root of the tension

T

in the string. When

T = 64\text{ N}

, the frequency is

f = 320\text{ Hz}

.
Find the value of

f

when

T = 100\text{ N}

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