Which statements are correct about the phase and amplitude of particles in an ideal stationary wave on a string?
Select all that apply

Question

Which statements are correct about the phase and amplitude of particles in an ideal stationary wave on a string?

G1 Physics · Accepted Answer

Within one loop, the position-dependent factor has one sign, so all particles oscillate in the same phase. Across a node, the sign changes, giving a phase difference of π between adjacent loops. At a node, the amplitude is zero. At an antinode, two equal component waves reinforce completely, producing amplitude 2A. Therefore all four statements are correct.