Which was the first real entertainment movie to be shown?
Answer:
In 1901 American projectionist Edwin S. Porter began making longer films that told a story. His The Great Train Robbery, made in 1903, was the first film shown for entertainment. Nickelodeon theatres sprung up in converted storefronts and charged 5 cents for a show. The first colour films were hand-painted.
Question:
With a pulley of 5 strings, why is each string experiencing 10 N of force and not 2 N apiece (when you pull on the string with 10 N of force)?