While everyone knows Luke Skywalker travels to Dagobah to train with Jedi master Yoda, not everyone knows just how hard it was for him to do a one-armed handstand while balancing Yoda on one foot. Wanting to know just how difficult (or easy) it was to do such an exercise, Rhett Allain decided to use physics to calculate just how much Yoda weighs.
To do this, Allain had to make a few assumptions (that planet Dagobah was just like Earth and Luke’s heights/weight), used Tracker Video Analysis and a little more physics magic to come up with a Yoda-mass of -43.7. Yes, a negative mass!
‘But what does that mean?’, Allain asks. ‘It means that in order for Luke to balance in that position, Yoda would have to pull UP on his leg rather than push down. One way to pull up would be to have a negative mass (which we don’t see). The other way for Yoda to pull up on Luke would be with The Force.
‘No, Luke is not using the Force to hold Yoda up. In fact, even if Luke was doing a handstand without Yoda pulling up, his center of mass would be 12 cm to the right of his hand. He would tip over. Why is it that Yoda using The Force and not Luke? Luke doesn’t know what he is doing. He couldn’t even lift the X-wing (which happens right after this). He’s just a student. Yoda was just helping Luke because he wanted him to feel a small sense of accomplishment after his failure in the cave’.
Need a complete rundown of the calculations Allain used? See them all here.