Why can’t you get a gain in movement using an inclined plane?

Because it gives a gain in strength, and according to the “golden rule” of mechanics, when using simple mechanisms, we gain in strength as many times as we lose in distance.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.