State the laws of simple pendulum?

Law of Length: The time period of the simple pendulum is directly proportional to the square root of its length. ... The oscillation of the simple pendulum is isochronous. Law of gravity: The time period of a simple pendulum is inversely proportional to the square root of the acceleration due to gravity at that place.

f is prop to m1xm2 double m1 double force

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.