I was selected for a technical screening via video call and was scheduled to be interviewed by a mechanical engineering lead and a mechanical engineer.

The interview was scheduled for 45 minutes. They spent about 35 minutes asking me questions about previous work I had done for a Formula Student team, questions that were admittedly more in-depth than I had anticipated.

After this, they asked me two different technical questions: a physics concept question and a design question.

I was asked how I would design a top, like the toy, that wouldn't stop spinning.

This is sort of a "classic" physics problem where a weight is attached to a ball of equal mass by a string. The weight is suspended through a hole in a table, and the ball rolls around the table in a circle such that the weight is in static equilibrium. I was asked to draw a FBD for the ball.