Don't skip this problem
Why does the needle cease to skip after weighing it down?
A: By increasing the weight, the opposing normal force is increased and so the kinetic friction is increased, since kinetic friction is proportional to normal force.
B: The eraser is positively charged, and induces a positive charge on the needle, which eliminates the repulsion between the normally negative needle and the negatively charged vinyl surface.
C: The eraser makes the needle stay in that fixed position in space, while the turntable platter rotates the LP, making it play smoothly.