Equation for Swing Leg Angle: Supporting 25 lbs in a 180 Arch

[nelsontod]

I need help with an equation for the angle of the legs of a swing. I am building a swing. It is only 4 feet high, it is an indoor apartment swing for my son. I would like to know what the minimum legs angle would need be to support swinging 25 pounds in a 180 (probably less) arch. And if I could get some equation for that , that would be great. Is it centrifuge momentum, rotational velocity? I got B's in physics 1 and 2.

Thank you so much! just trying to help my kid stop crying and sleep more. When i swing him with my arms in teh car seat it works miracle, but he needs the arch that seats at target and walmart don't provide.

 

[anorlunda]

Might something like a jumper be safer than a swing? The one I checked claims to be for children up to 28 pounds.

If you do use a swing, remember that you can bolt the legs to the floor rather than depend on angles.

 

[nelsontod]

yes, that is true. But i have no beam.

 

[anorlunda]

yes, that is true. But i have no beam.

People typically use the trim of a doorway for the beam.

Jumpers also come with free standing brackets. The reason I trust them more than a home made swing is product liability. To avoid lawsuits the manufacturer must do thorough product safety engineering and testing.

The disadvantage is that if your son weighs 25 pounds, he will exceed 28 pounds soon.

 

[nelsontod]

he weighs 8 pounds now.

 

[berkeman]

would need be to support swinging 25 pounds in a 180 (probably less) arch

What the heck are you planning for the little guy? Stick to standard designs and dimensions. Just look at the Tors R Us website or similar to see what are standard dimensions for little kid indoor swings. We can't be of much help if you are planning on something that swings 180 degrees.

https://www.google.com/search?biw=1......0...1.1.64.psy-ab..1.2.275...0.JdzR_fhFRDM

https://i5.walmartimages.com/asr/9e....jpeg?odnHeight=450&odnWidth=450&odnBg=FFFFFF