Physics can enhance the understanding of pianos by exploring the relationship between sound waves and musical harmony, focusing on concepts like frequency and resonance. Beyond mechanics, the study of acoustics reveals how different materials and shapes affect sound quality. The mathematical relationships in music, such as intervals and scales, also illustrate the physics behind discordance and consonance. Additionally, considering phenomena like the Doppler effect can provide insights into how movement impacts sound perception. Overall, physics offers a deeper appreciation of the intricate connections between sound production and musical theory in pianos.