enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Work (physics) - Wikipedia

    en.wikipedia.org/wiki/Work_(physics)

    It is useful to notice that the resultant force used in Newton's laws can be separated into forces that are applied to the particle and forces imposed by constraints on the movement of the particle. Remarkably, the work of a constraint force is zero, therefore only the work of the applied forces need be considered in the work–energy principle.

  3. Newton's laws of motion - Wikipedia

    en.wikipedia.org/wiki/Newton's_laws_of_motion

    [18]: 14–15 The torque can vanish even when the force is non-zero, if the body is located at the reference point (=) or if the force and the displacement vector are directed along the same line. The angular momentum of a collection of point masses, and thus of an extended body, is found by adding the contributions from each of the points.

  4. Potential energy - Wikipedia

    en.wikipedia.org/wiki/Potential_energy

    In this case, the force can be defined as the negative of the vector gradient of the potential field. If the work for an applied force is independent of the path, then the work done by the force is evaluated from the start to the end of the trajectory of the point of application.

  5. Force - Wikipedia

    en.wikipedia.org/wiki/Force

    In such a situation, a force is applied in the direction of motion while the kinetic friction force exactly opposes the applied force. This results in zero net force, but since the object started with a non-zero velocity, it continues to move with a non-zero velocity. Aristotle misinterpreted this motion as being caused by the applied force.

  6. Hooke's law - Wikipedia

    en.wikipedia.org/wiki/Hooke's_law

    A spring with spaces between the coils can be compressed, and the same formula holds for compression, with F s and x both negative in that case. [4] Graphical derivation. According to this formula, the graph of the applied force F s as a function of the displacement x will be a straight line passing through the origin, whose slope is k.

  7. Stress (mechanics) - Wikipedia

    en.wikipedia.org/wiki/Stress_(mechanics)

    The force across any section S of the cube must balance the forces applied below the section. In the three sections shown, the forces are F (top right), F 2 {\displaystyle {\sqrt {2}}} (bottom left), and F 3 / 2 {\displaystyle {\sqrt {3}}/2} (bottom right); and the area of S is A , A 2 {\displaystyle {\sqrt {2}}} and A 3 / 2 {\displaystyle ...

  8. Classical central-force problem - Wikipedia

    en.wikipedia.org/wiki/Classical_central-force...

    A central force is a force (possibly negative) that points from the particle directly towards a fixed point in space, the center, and whose magnitude only depends on the distance of the object to the center. In a few important cases, the problem can be solved analytically, i.e., in terms of well-studied functions such as trigonometric functions.

  9. Impulse (physics) - Wikipedia

    en.wikipedia.org/wiki/Impulse_(physics)

    Newton’s second law of motion states that the rate of change of momentum of an object is equal to the resultant force F acting on the object: =, so the impulse J delivered by a steady force F acting for time Δ t is: J = F Δ t . {\displaystyle \mathbf {J} =\mathbf {F} \Delta t.}