A bridge is placed under the string of a monochord at a point near the middle and it is found that the two parts produce 3 beats per second when the stretching force is 8 kg. If the load be then incre

Question

A bridge is placed under the string of a monochord at a point near the middle and it is found that the two parts produce 3 beats per second when the stretching force is 8 kg. If the load be then increased to 12 kg, determine the rate of beating of the two parts of the string. (answer in $beats/s$ ).

Answer:

3.67

Solution:

Both parts have the same $μ$ and $T$ , so $f \propto T / L$ and the difference $\propto T$ . New beat rate = $3 12/8 = 3.67$ per second.

TestHub · Accepted Answer

Both parts have the same μ and T , so f ∝ T ​ / L and the difference ∝ T ​ . New beat rate = 3 12/8 ​ = 3.67 per second.

Physics - Sound Wave Question with Solution | TestHub

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