What evidence would have been needed to contradict the theory of gravity before it was proven to be a law?(1 point)

Question

Responses

Consistent measurements showing that the gravitational constant varies significantly on Earth.
Consistent measurements showing that the gravitational constant varies significantly on Earth.

Discovery of a force stronger than gravity that acts universally on all matter.
Discovery of a force stronger than gravity that acts universally on all matter.

Observations of objects floating upwards without any external force.
Observations of objects floating upwards without any external force.

Experiments demonstrating that objects of different masses fall at different rates in a vacuum.

Answer 1

To contradict the theory of gravity before it was proven to be a law, the most compelling evidence would be:

Observations of objects floating upwards without any external force.

This would directly challenge the fundamental premise of gravity, which states that mass attracts mass and objects are pulled towards the center of Earth (or any mass). If objects were consistently observed to float upwards without an external force acting on them, it would imply that the gravitational force is not acting as predicted.