Gravity

The gravitational constant mentioned by Newton was measured at the end of the 18th century by Henry Cavendish (in the Cavendish experiment), using a torsion balance or pendulum designed by Mitchell which measured the force between suspended lead balls, which twisted (or applied torque) to a bar, the magnitude of which is proportional to the force applied. His intent was to detemine the specific gravity of the earth, but his notes indicate a value for G which differs by only about 1% from the value accepted today.

Gravity plays a significant role in the deposition process by influencing how sediment particles are transported and deposited. Gravity causes sediment particles to settle and be deposited in depositional environments based on their size and weight. Heavier particles tend to settle first, while lighter particles may be transported further before they are deposited.

The four ways sediments erode by gravity are creep (gradual downhill movement of soil), slides (sudden movement of large masses of soil downhill), flows (movement of sediment mixed with water downhill), and falls (sediment falling freely due to gravity).

Positive gravity anomalies in geology indicate areas where the density of subsurface material is higher than average. This can be caused by denser rock types, such as iron-rich minerals, or by the presence of denser materials like metallic ores or large underground structures. Positive gravity anomalies can be useful for identifying potential mineral deposits or mapping subsurface geological structures.

Tides are caused by the gravitational pull of the moon and the sun on the Earth's oceans, leading to a rhythmic rise and fall of sea levels. However, tides do not directly affect the gravity on Earth's surface. The force of gravity at any location remains relatively constant, with minor variations due to factors like altitude and the density of Earth's materials.

The Earth's gravity pulls objects towards its center, including you, causing you to feel a downward force. When you stand on the ground, it exerts an equal and opposite force upwards on you, keeping you from falling due to gravity. This balance of forces allows you to stay firmly on the ground.

Gravity plays a crucial role in the death of a star by causing the core to collapse after nuclear fusion ceases. This collapse can lead to either a supernova explosion or the formation of a black hole, depending on the mass of the star. Gravity compresses the star's core, triggering intense reactions and releasing enormous amounts of energy, ultimately leading to the star's demise.

Gravity played a significant role in shaping Earth during its formation by pulling together particles and debris that eventually formed the planet. The intense gravitational forces caused the material to compress, resulting in Earth's spherical shape. Over time, the gravitational pull also influenced the distribution of Earth's landmasses and oceans, contributing to its current geological features like mountains and valleys.

The value of gravity on Earth is relatively consistent at approximately 9.81 m/s^2 near the surface. However, gravity can vary slightly depending on factors such as altitude, latitude, and geological features. These variations are small and generally not noticeable in day-to-day life.

Specific gravity for minerals is the ratio of the weight of a mineral to the weight of an equal volume of water, providing a measure of the density of the mineral. It helps in identifying minerals and determining their composition, as different minerals have different specific gravities. It is a useful property for mineralogists and geologists to distinguish between minerals with similar visual characteristics.

The average strength of gravity on Earth is approximately 9.81 meters per second squared (m/s^2). This value can vary slightly depending on location due to factors such as altitude and the density of the Earth's crust.

Planets do not collide with each other because they orbit around the Sun in stable paths called orbits. These orbits are a balance between the speed of the planet and the gravitational pull of the Sun. The gravitational force between planets is not strong enough to overcome the momentum of their orbits and cause them to collide.

The unit weight of soil with a specific gravity of 2.65 is 1.8 g/cc.

The specific gravity of augite, a common mineral in the pyroxene group, ranges from approximately 3.2 to 3.6. This specific gravity measurement can help in distinguishing augite from other minerals when analyzing rock samples.

There are three main types of gravity anomalies: positive anomalies, negative anomalies, and neutral anomalies. Positive anomalies indicate higher-than-normal gravity readings, while negative anomalies indicate lower-than-normal readings. Neutral anomalies show no deviation from the expected gravity level. These anomalies are typically measured in microgal units.

Earth's gravity is consistent and unchanging at approximately 9.81 m/s². This gravitational force is responsible for keeping objects anchored to the Earth's surface and determining their weight.

Everything with mass has a center of gravity although in an atomic scale these numbers are very small and in newtons laws state all things with mass put forces on anything else with mass so it might not be possible to balance an atom on top of another atom but everything has a center of gravity that has mass or weight no matter how big or small

Gravity erodes a landform by pulling sediments or rocks downward, causing them to move. This movement, known as mass wasting, can lead to erosion through processes like landslides, rockfalls, and creep. Over time, gravity works to reshape and wear down the landform by carrying particles downhill.

Mercury has the smallest mass of the 8 planets at 5.5% of the mass of the Earth. It therefore has the least gravity of all the planets.

Back when Pluto was still listed as a planet it was considered to have the weakest gravity of all the solar system's planets. Now that Pluto has been demoted from planetary status, the planet with the weakest surface gravity is Mercury. While Pluto's gravity is weaker than that of any planet in the solar system, there are still many non-plantery objects with weaker surface gravity.

A region in space that exerts a gravitational pull on all matter and light around it is a black hole. Black holes are extremely dense objects with gravity so strong that not even light can escape its pull, leading to their characteristic feature of being invisible, hence the name "black hole."

The gravity of Mars is about 38% of that on Earth. This means that if you were on Mars, you would weigh less than on Earth because gravity is weaker. However, the gravity of Mars has minimal direct effect on Earth as they are separate celestial bodies with their own gravitational fields.

The specific gravity of iron ore fines at 4.5 indicates that it is denser than water, which has a specific gravity of 1. This means that iron ore fines would sink in water. Specific gravity is a measure of density relative to the density of water, so a higher value indicates a denser material.

All black holes are theorized to have a singularity at their center, characterized by infinite density and gravitational pull. However, the exact nature of the singularity is still a topic of debate among physicists, as it involves the intersection of general relativity and quantum mechanics, which are not yet fully reconciled theories.

No, a planet does not collapse because gravity isn't strong enough to provide enough pressure to crush a planet.

You might make a planet heavier and heavier as to increase its gravity but at some point the pressure in the planet's core will be high enough to support nuclear fusion and the planet will have changed into a star. At that point radiative pressure also begins to fight gravity.