TRUE or FALSE:
A force can happen if there is only one object involved.

Aballet student who learns with the of his instructor is demonstrating learning.

Anybody wanna ? (picture included? )

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.