Las barras AB y AC, perpendiculares entre sí y de masas despreciables, están unidas rígidamente en el punto A y pueden rotar en un plano vertical alrededor de dicho punto. Determinar el ángulo β para el cual el equilibrio queda establecido cuando las masas de los bloques mostrados en la figura son tales que M2 = 2M1.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.