Newton's Second Law is concerned with unbalanced forces. Unbalanced forces produce acceleration. The greater the unbalanced force the greater the acceleration. This law is usually written as an ...

In other words, the acceleration of an object increases if the resultant force on it increases, and decreases if the mass of the object increases.

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 ...