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  2. Tension (physics) - Wikipedia

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

    Tension is the pulling or stretching force transmitted axially along an object such as a string, rope, chain, rod, truss member, or other object, so as to stretch or pull apart the object. In terms of force, it is the opposite of compression. Tension might also be described as the action-reaction pair of forces acting at each end of an object.

  3. Atwood machine - Wikipedia

    en.wikipedia.org/wiki/Atwood_machine

    An equation for the acceleration can be derived by analyzing forces. Assuming a massless, inextensible string and an ideal massless pulley, the only forces to consider are: tension force (T), and the weight of the two masses (W 1 and W 2). To find an acceleration, consider the forces affecting each individual mass.

  4. Hooke's law - Wikipedia

    en.wikipedia.org/wiki/Hooke's_law

    In physics, Hooke's law is an empirical law which states that the force (F) needed to extend or compress a spring by some distance (x) scales linearly with respect to that distance—that is, F s = kx, where k is a constant factor characteristic of the spring (i.e., its stiffness), and x is small compared to the total possible deformation of the spring.

  5. Glossary of string theory - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_string_theory

    A massless scalar particle, related to dilations of spacetime. Dirichlet Dirichlet boundary conditions on an open string say that the ends of the string are fixed (often lying on a D-brane). DIS Deep inelastic scattering DLCQ Discrete light-cone quantization DM Dark matter DØ

  6. String duality - Wikipedia

    en.wikipedia.org/wiki/String_duality

    Winding around the circle requires energy, because the string must be stretched against its tension, so it contributes an amount of energy of the form /, where is a constant called the string length and w is the winding number (an integer). Now (for a given maximum energy) there will be many different states (with different momenta) at large R ...

  7. Trump says helicopter in Washington crash was flying too high

    www.aol.com/news/trump-says-blackhawk-helicopter...

    U.S. President Donald Trump said on Friday the Army Black Hawk helicopter that collided with a regional passenger jet in Washington, D.C., was flying too high at the time of the accident, in what ...

  8. Capstan equation - Wikipedia

    en.wikipedia.org/wiki/Capstan_equation

    The applied tension () is a function of the total angle subtended by the rope on the capstan. On the verge of slipping, this is also the frictional force, which is by definition μ {\textstyle \mu } times the normal force R ( φ ) {\displaystyle R(\varphi )} .

  9. Subsidy Scorecards: Southern Illinois University-Edwardsville

    projects.huffingtonpost.com/projects/ncaa/...

    SOURCE: Integrated Postsecondary Education Data System, Southern Illinois University-Edwardsville (2014, 2013, 2012, 2011, 2010).Read our methodology here.. HuffPost and The Chronicle examined 201 public D-I schools from 2010-2014.