Answer to Question #15860 in Mechanics | Relativity for mark
Add 10N acting left to right, to 10N acting left to right
When we add forces we work with vectors that have magnitude and direction. While adding vectors we add them by components (e.g., x-components and y-components separately). In this particular case both forces have the same direction, so the resulting force will be 10H + 10H = 20H acting left to right.