Forces in a block
This simulation is useful to see what the normal force applied by a surface on a block looks like. What happens to the normal force when the block is pushed down? How are normal force, downward force and weight related?
This simulation is useful to see what the tension force on a rope is like when pulling a block upward. What is the sum of the tension and the normal force?
Addition of forces I
Force is a vector quantity. When several forces act on an object, the resultant force is the vector sum of those forces. Change the modulus and direction of the forces and see how the resultant force changes.
Advanced Fluid Mechanics 1: Fundamentals