大象传媒

Springs are everywhere.

They鈥檙e in pens, mattresses, toys, cars, electronic and medical devices and much, much more. But what makes a spring stay鈥 springy?

It all comes down to force and Hooke鈥檚 Law, as Professor Brian Cox explains with a quick physics lesson.

WATCH: Professor Brian Cox explains all about Hooke's Law

Want to know more about physics? We've got you sorted.