Of course you might want to keep that balloon. That's why you tie a string to it. This string exerts a downward tension force (T) with a magnitude to make the net force equal to zero.

You'll need a helium balloon no longer than 1.8 metres as well as a private balloon licence, 1.1 metres cubed of helium, 300 metres of string, a yo-yo reel and a camera.

Image: The House That Lars Built. ... Their instructions are similar to Green Wedding Shoes’, also using a balloon decorating strip, balloon string and glue dots. Their No. 1 tip: ...

Imagine a 7-foot-long purple balloon ribbon. That's one inch longer than American basketball phenomenon LeBron James, who measured in at 6 feet and 9 inches tall with the National Basketball League.