I am doing a project on the physics of Santa, and one of the requirements is to build a simple demonstration about one of the concepts that apply to the physics of Santa. I want to make something that will show how much energy it takes to get santa's sleigh off the ground.

I have already figured out the exact amount of joules it requires to lift Santa into the sky, but I'm not sure how I can demonstrate it.

I have looked into different masses of bouncy balls or possibly building something with an incline then seeing how heavier objects require more energy to reach the top?

Any ideas?? Thank you so much!