For the analysis, we will use a moving reference frame attached to the rotating disk. Using this in Newton's 2nd law, we determine the contact force F acting on the particle. It is seen that the ...

Non-contact forces close non-contact forcesA force that affects an object without coming into contact with that object, eg magnetism. are forces that act between two objects that are not ...

A force is a push or a pull. Contact forces arise between two objects which are in contact. Friction close frictionA force that opposes or prevents movement and converts kinetic energy into heat.