11/27/2023 0 Comments Force engineering definitionAs learned in an earlier unit, a vector quantity is a quantity that has both magnitude and direction. Thus, the following unit equivalency can be stated: 1 Newton = 1 kg Ī force is a vector quantity. One Newton is the amount of force required to give a 1-kg mass an acceleration of 1 m/s/s. A Newton is abbreviated by an "N." To say "10.0 N" means 10.0 Newton of force. Contact Forcesįorce is a quantity that is measured using the standard metric unit known as the Newton. These specific forces will be discussed in more detail later in Lesson 2 as well as in other lessons.Įxamples of contact and action-at-distance forces are listed in the table below. For example, two magnets can exert a magnetic pull on each other even when separated by a distance of a few centimeters. And magnetic forces are action-at-a-distance forces. For example, the protons in the nucleus of an atom and the electrons outside the nucleus experience an electrical pull towards each other despite their small spatial separation. Electric forces are action-at-a-distance forces. Even when your feet leave the earth and you are no longer in physical contact with the earth, there is a gravitational pull between you and the Earth. For example, the sun and planets exert a gravitational pull on each other despite their large spatial separation. Examples of action-at-a-distance forces include gravitational forces. These specific forces will be discussed in more detail later in Lesson 2 as well as in other lessons.Īction-at-a-distance forces are those types of forces that result even when the two interacting objects are not in physical contact with each other, yet are able to exert a push or pull despite their physical separation. ![]() Examples of contact forces include frictional forces, tensional forces, normal forces, air resistance forces, and applied forces.
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