Suppose you have a disk in a vacuum that is completely unconstrained (not fixed at its center). If you apply a tangential force at a point on the circumference of the disk, does the force act purely as a torque and begin to change the angular momentum of the disk without changing its linear momentum? Or does the disk center also accelerate forward through space?
I am split between the scenarios since, on the one hand, a force at a point on the circumference is transferred by the rigid disk to the center, thus accelerating it. But there is also a torque on the body, which changes angular momentum. Can someone explain?