DISGUSTED students filmed the shocking moment they caught their teacher watching porn while giving a physics class. Footage filmed on phones by teenagers at a Russian school show the teacher ...

It is more stable. The weight has a turning effect or moment, which causes the car to topple over or fall back. A double decker bus is stable as it has a: low centre of gravity because of its low ...

The forces acting on the teeth are identical for both gears, but their moments are different: If the driven gear is made larger is will rotate more slowly but with a greater moment. For example ...