What happens when a tuning fork that is still vibrating touches wooden desk?

When a tuning fork that is still vibrating touches a wooden desk, the vibrations from the tuning fork are transferred to the desk. This causes the desk to vibrate at the same frequency as the tuning fork. The vibrations of the desk produce sound waves, which can be heard by people nearby.

The sound produced by the desk will be louder and longer than the sound produced by the tuning fork alone. This is because the desk is a larger object than the tuning fork, so it can vibrate with more energy. The desk also has a larger surface area, so it can radiate more sound waves.

The sound produced by the desk will also have a different timbre than the sound produced by the tuning fork. This is because the desk is made of a different material than the tuning fork, so it will vibrate in a different way. The timbre of the sound will depend on the specific type of wood that the desk is made of.

In addition to producing sound, the vibrations of the tuning fork can also cause the desk to move. This movement is usually very small, but it can be visible if the desk is very light. The movement of the desk is caused by the fact that the vibrations of the tuning fork are creating a force on the desk. This force is called a vibration force.

The vibration force produced by a tuning fork is very small, but it can be enough to move objects that are very light. This is why tuning forks are sometimes used to test the sensitivity of instruments, such as accelerometers.