Find the frequencies of the first three harmonics of a 1.0-m long string which has a mass per unit length of 2.0  10–3 kg/m and a tension of 80 n when both ends are fixed in place.

Explanation:

Given:

Length of the string, L = 1 m

Mass per unit length, (m/L) = 2.0 × 10⁻³ kg/m

Tension in the string, T = 80N

Now, We know that,

Frequency,  ................(1)

where, V = velocity

also,

substituting the values in the equation we get

Now using the equation (1)

also,

Hence, the required frequencies are

be subject to a force andchange its motion

it doesn't. it was imagined up in the middle ages.