Question:

Two small insulating spheres are attached to silk threads

Last updated: 6/9/2023

Two small insulating spheres are attached to silk threads

Two small insulating spheres are attached to silk threads The spheres have equal masses of 40g and have electric charges of q 2 0 C and q 2 0 C The spheres are brought into the initial positions shown in Figure a with a vertical separation of 15 cm between them In figure the upper thread is slowly pulled upward while point B is kept fixed When point A has been raised through a height h the lower sphere suddenly falls as shown in Figure b The height h is closest to A 9 cm B 11 cm D 15cm C 13 cm 91 T 15 cm B a h A 892 b