The cat is moving in a circle, so it has a centripetal acceleration and a centripetal force. At the apex of the loop, that force is the sum of gravity, and resistance from the track. The track force is greater than or equal to zero, so acceleration due to gravity is less than or equal to the total centripetal acceleration.
g ≤ v²/r
So,
r ≤ v²/g
Taking top speed of a cat as 8.278m/s (from Wolfram Alpha), and g on earth as 9.81m/s², this gives us r ≤ 6.99m. So long as the cat can maintain its top speed all around the loop, it can successfully do a loop of up to 14 meters diameter. This is a lot bigger than I expected, to the extent that I suspect some flaw in my reasoning.
Did anyone else learn that eggs are dairy products? (Meaning, the word ‘dairy’ encompasses both eggs and milk. Not that eggs are somehow produced by cows)
I lived in a city, had occasional need for a car. A car club would have been ideal. Don’t need to spend thousands on a car upfront, don’t need to deal with maintenance, don’t need to secure parking.
Problem? The only car club in town was called whizzgo. Like, a toddler word for urination. Written on all the cars in big colourful letters. No thanks.
Getting XCom flashbacks. I’d set up a breach team on the door, and send the rest of the squad round and up that drainpipe so they can drop down from the roof. But best go around the back of the cars so as not to activate through the window.