How much work is playing an instrument? The results of visualizing the energy

I read an interview with Konishi Kinoko of "Nan no hanashi desu ka" in an article by the Kokugakuin University Media Editorial Department.

Wonderful!
I've decided to do "Nan no hanashi desu ka" too ☺️

Is Gamelan work?

My Gamelan practice has recently entered serious mode.

Before I knew it, I was practicing four days a week. With preparation and review, it's harder than my job. Or rather, Gamelan is my job.

Now, I didn't study much physics, so my memory is a bit hazy, but"Work" can be quantified in physics, right?Let's visualize just how much work goes into Gamelan!!

How to measure work

Here is the definition of work in physics.

It's a bit difficult, but "work" in physics is apparently the product of "force" and "distance." Wow!

The unit for "force" is apparently called a "newton."
Here is how to calculate "force."

So force is "mass × acceleration." Speed doesn't matter.

It seems that force becomes greater by accelerating rapidly rather than just moving the mallet quickly.

Now, "acceleration" seems to be calculable from distance and time.
Physics is amazing because you can calculate anything.

This time, I calculated using values faithful to my own Gamelan performance.
I think there is more acceleration in authentic Bali.

• The height (distance) is about the distance of a wrist flick.

• For time, since I play 2 to 3 notes per second, I'll have it calculated based on that amount of time.

• I set the weight of the mallet used to make the sound at 200g.

Results

Here are the results.

Gamelan performance has 2 newtons of force behind it. Interesting.

Those familiar with physics might have a sense of "Oh, it's about this much," but to a layperson like Shirona, 2 newtons sounds like an incredible amount of force.

Now, a gamelan lesson lasts two hours.
If you play for two hours, how much work have you done?

Ta-da! The work done by playing gamelan for two hours is 1800 joules.

Since 1 kcal = 4,184 J, converting the unit to calories gives us 0.43 kcal.

Compared to "2 newtons," this sounds like a very small amount. That's strange.
It's only the energy of a few grains of rice. What??

I had a vague feeling that "playing gamelan must take a tremendous amount of energy," but physically speaking, it's only worth a few grains of rice. I'm shocked.

By the way, it seems that a two-hour gamelan performance consumes about 200 kcal.

Gamelan has poor fuel efficiency, doesn't it?

Is it possible that gamelan doesn't actually involve much work?

<Verification Results>

"Physically speaking, a two-hour gamelan performance only amounts to the work of 5 grains of rice."

What are you talking about?

Bonus

Now, I'm sure many of you feel like pointing out some things, but please enjoy a performance of authentic gamelan at the end ☺️ It's a world of trance with dizzying speed.

They say that when skilled people play, they can become possessed or have an out-of-body experience during the performance.
My dream is for everyone who comes to listen to have a spiritual experience ☺️ I'll do my best in practice.

The end.