What is Cavendish law?
In Newton’s law of universal gravitation, the attractive force between two objects (F) is equal to G times the product of their masses (m1m2) divided by the square of the distance between them (r2); that is, F = Gm1m2/r2. The experiment was performed in 1797–98 by the English scientist Henry Cavendish.
What is the Cavendish experiment and why is it important?
The Cavendish experiment, performed in 1797–1798 by English scientist Henry Cavendish, was the first experiment to measure the force of gravity between masses in the laboratory and the first to yield accurate values for the gravitational constant.
How did Henry Cavendish determine the gravitational constant?
G is a constant that must be determined experimentally. In 1798 Cavendish measured the force between attracting lead spheres with a torsion balance. He knew the masses of the spheres and how far apart they were. He carefully measured the force between them, which allowed him to calculate G.
What was the conclusion of the Cavendish experiment?
Cavendish found that the Earth’s density was 5.448 ± 0.033 times that of water (due to a simple arithmetic error, found in 1821 by F. Baily, the erroneous value 5.48 ± 0.038 appears in his paper).
What is Cavendish law of electrostatic attraction and repulsion?
Cavendish’s Experiment Cavendish took the converse of this to investigate the behavior of the electric force. That is, he assumed if a hollow uniformly charged sphere does not produce a net electric force at any point within the sphere, then the electric force obeys an inverse square law.
How do you do the Cavendish experiment?
Henry Cavendish performed an experiment to find the density of the Earth. Other scientists used his experimental setup to determine the value of G. The setup consisted of a torsion balance to attract lead balls together, measuring the torque on a wire and then equating it to the gravitational force between the balls.
What did Cavendish discover?
HydrogenHenry Cavendish / Discovered
How gravitation is different from gravity?
Gravitation is the acting force between two bodies. On the other hand, gravity is the force occurring between an object and the very big object earth. Gravitation also represents that this force is directly proportional to the product of the masses of both objects.
What did Henry Cavendish discover?
What is the basic law of attraction and repulsion?
According to Coulomb, the electric force for charges at rest has the following properties: Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges.