## Swing Explorer

A Slide Rule, a Sundial, and a Physicist walk into a bar
James
Posts: 31
Joined: Fri Dec 17, 2021 11:44 am
Contact:

### Re: Swing Explorer

After looking a bit further, I have seen the force that moves the swinger. I don't know what it is called, but I know where it comes from.

When you take gravity and tension from the equation and pump your legs, the swinger spins or rotates. When tension is added to the equation, and pump the swinger rotates somewhat, and his/her center of mass moves slightly, almost like he/she is rolling around the swing. This means whatever force spins the swinger is the same force that initiates the movement. I don't know what force this is, so I will leave that up to someone else.

Glad to help!
This is a block of text.

mesawille
Posts: 1
Joined: Sun Jan 30, 2022 7:37 pm

### Re: Swing Explorer

It has something to do with our center of gravity, which is roughly in our middle, give or take a little, when we move our legs forwards or backwards we change our center of balance, which causes a change in well everything, the swing tries adjusting to this, but gravity + us moving our legs back and forth doesn't let the swing keep us in the center.

James
Posts: 31
Joined: Fri Dec 17, 2021 11:44 am
Contact:

### Re: Swing Explorer

Right!

The movement of the swinger's appendages offsets the center of gravity and moves the swing*, and gravity pulls the swing back to the ground (or as close as it can get to the ground.)

*The only thing that I don't get is what force this is.

Kudos to mesawille for getting it straight in your head and understanding (and it's also nice to have a partner in crime )

Waiting for assistance...
This is a block of text.

larry
Posts: 1
Joined: Fri May 27, 2022 9:01 am

### Re: Swing Explorer

Gravity moves as you swing so if a equal force was made it would not match up with gravity
Attachments
ssdss.jpg (22.32 KiB) Viewed 31643 times
ssss.png (161.63 KiB) Viewed 31643 times

James
Posts: 31
Joined: Fri Dec 17, 2021 11:44 am
Contact:

### Re: Swing Explorer

But how does this start?

In order for gravity to have moved and pulled you back, you would have had to start moving somehow.

Basically, in order for pumping to move you, pumping would have had to move you.
Last edited by James on Mon Nov 07, 2022 11:25 am, edited 1 time in total.
This is a block of text.

WiiSportsPro21
Posts: 1
Joined: Thu Nov 03, 2022 9:30 am

### Re: Swing Explorer

I figured it out for why pumping works! When you start pumping, the gravity changes, forcing movement. The pumping itself seems like the unbalanced force.

James
Posts: 31
Joined: Fri Dec 17, 2021 11:44 am
Contact:

### Re: Swing Explorer

Literally just tell us, we know you know Andy. Just spill the beans.

Jk it's fine.
This is a block of text.

James
Posts: 31
Joined: Fri Dec 17, 2021 11:44 am
Contact:

### Re: Swing Explorer

mesawille wrote:
Sun Jan 30, 2022 7:39 pm
It has something to do with our center of gravity, which is roughly in our middle, give or take a little, when we move our legs forwards or backwards we change our center of balance, which causes a change in well everything, the swing tries adjusting to this, but gravity + us moving our legs back and forth doesn't let the swing keep us in the center.
I realized something.

This would happen if you moved just your top or just your bottom, but they both move at the same time. Newton's third law: "when two objects interact, they apply forces to each other of equal magnitude and opposite direction."
Spoiler
Show
Yeah, I googled that.
The top and the bottom move simultaneously, and, also, even if they didn't, you cannot apply force to your center of mass while in a vacuum.

As said in Interstellar, you gotta leave something behind.

I don't know if it is a what or an if with the leaving behind. The center of mass including you and the swing can't move, can it? The force is not friction, the total inertia is a linear function, I assume that gravity it affecting the movement.

I don't know what it is. I think it has to do with spinning.

Think of moving from a coordinate plane (frictionless ice) to a polar plane (frictionless swing). There is a difference. Dunno.
This is a block of text.

SmartBoi
Posts: 3
Joined: Thu Dec 07, 2023 6:51 pm

### Re: Swing Explorer

Something to do with the gravity, it doesn't work with no gravity.