The word "gravity" refers to the force that pulls an object to another object. More specifically, it is the force that the Earth or another heavenly body exerts on people or objects, pulling them toward it.Know More
All planets have gravity, but some have more than others. After the sun, Jupiter has the strongest force of gravity in the solar system because it has the largest mass of all the planets. Gravity keeps people and things grounded on the surface of the Earth instead of floating through the air.
The word's origin comes from the Latin stem word "gravitas," which means heaviness. Another use of the word "gravity" means seriousness, as in the sentence, "He tried to explain the gravity of the situation to those who thought the prank was funny."Learn more about Motion & Mechanics
For an object with unchanging mass, force equals mass times acceleration. This is abbreviated as f = ma. Force is a push/pull on an object resulting from interactions with another object. Having a magnitude and a direction makes force a vector quantity.Full Answer >
A mechanical force involves contact with another object. Mechanical forces are distinguished from the four natural forces of electromagnetism, the strong nuclear force, the weak nuclear force and gravity. While each of the four natural forces do not require a physical connection, mechanical forces must travel through a medium.Full Answer >
Tension force is a force that is exerted equally on both ends of a cable, chain, rope, wire or other continuous object and is transmitted between the ends by that object. On a microscopic level, objects under tension have a separation between molecules that creates potential energy in their bonds.Full Answer >
Shear force is a force that acts on an object in a direction perpendicular to the extension of the object. For example, wind pushing against a tree is a shear force. Shear force results in shear stress, which can eventually snap or break an object.Full Answer >