Question

Help with sonometer exp.

Answer 1

Answer:

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#answerwithquality #bal

Explanation:

Um... What do you want with it?

Lemme help,

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• Answer should come around , 48-51 Hz.. The answer is 50 Hz.

• The basic principle is resonance of the frequency of the applied AC and that of the  string.
• ν = 1144.16 $\sqrt{T}$/L is a shortened form of the formula unless you know how to use a log book.

Answer 2

Answer:

Materials Required

A sonometer

A set of tuning forks of known frequency

0.5kg weight hanger

Some 0.5kg slotted weights

Rubber pad

Paper rider

Real Lab Procedure

To find the relation between frequency and length

Place the sonometer on the table.

Make sure that the pulley is frictionless. If you feel any friction, oil them.

Stretch the wire by placing a suitable maximum load on the weight hanger.

Move the wooden bridges outward, so that the length of wire between the bridges is maximum.

Take a tuning fork of known frequency. Make it vibrate by strike its prong with a rubber pad. Bring it near the ear.

Pluck the sonometer wire and leave it to vibrate.

Compare the sounds produced by tuning fork and sonometer wire. (Sound which has low pitch has less frequency).

Gently adjust the bridges for decreasing the length of wire, till the two sounds appear alike.

Put an inverted V shaped paper rider on the middle of the wire.

Vibrate the tuning fork and touch the lower end of its handle with sonometer board. The wire vibrates due to resonance and the paper rider falls.

Measure the length of wire between the bridges using a meter scale. It is the resonant length and record it in the ‘length decreasing’ column.

Now, bring the bridges closer and then slowly increase the length of the wire till the paper rider falls.

Measure the length of wire and record it in ‘length increasing’ column.

Repeat the above steps with tuning forks of other frequencies, and find resonant length each time.

To find the relation between length and tension

Select a tuning fork of known frequency

Set the load in the weight hanger as maximum.

Repeat the steps in the previous section to find out the resonant length.

Now, remove 0.5kg weight from the weight hanger and find resonant length with same tuning fork.

Repeat the experiment by removing slotted weights one by one in equal steps of 0.5kg.

Record the observations each time.

Simulator Procedure (as performed through the Online Labs)

Select the environment from the drop down list.

Select the material of the wire from the drop down list.

Select the diameter of the wire using the slider.

Select the weight of the slotted weights using the slider.

Select the frequency of the tuning fork using the slider.

Click on the ‘Hit tuning fork’ button to start/stop the vibration of tuning fork and touch it with the sonometer board.

Change the position of bridge A using the slider.

Change the position of bridge B using the slider.

Click on the ‘Place the paper rider’ button to place the paper rider back.

To redo the experiment, click on the ‘Reset’ button.

Results

The frequency V/s reciprocal of length graph is a straight line, which indicates that, frequency is inversely proportional to resonant length.

From the tabular column, it is found that; l2/T is a constant. The graph between square of length and tension is a straight line, which shows that tension is directly proportional to square of resonant length.