AcPChapter 4
... Force can act either through physical contact of two objects or at a distance ...
... Force can act either through physical contact of two objects or at a distance ...
Section Summary
... other is called friction. It acts in a direction opposite to the direction of the moving object. Friction will eventually cause an object to come to a stop. The strength of the friction force depends on two factors: how hard the surfaces push together and the types of surfaces involved. Rough surfac ...
... other is called friction. It acts in a direction opposite to the direction of the moving object. Friction will eventually cause an object to come to a stop. The strength of the friction force depends on two factors: how hard the surfaces push together and the types of surfaces involved. Rough surfac ...
Halliday-ch13
... If you fire a projectile upward, there is a certain minimum initial speed that will cause it to move upward forever, theoretically coming to rest only at infinity. This minimum initial speed is called the (Earth) escape speed. Consider a projectile of mass m, leaving the surface of a planet (mass M, ...
... If you fire a projectile upward, there is a certain minimum initial speed that will cause it to move upward forever, theoretically coming to rest only at infinity. This minimum initial speed is called the (Earth) escape speed. Consider a projectile of mass m, leaving the surface of a planet (mass M, ...
Sec 7.1ааVectors as Forces Applications of Vectors
... acted upon by an external unbalanced force. This means that in the absence of a nonzero net force, the center of mass of a body either remains at rest, or moves at a constant velocity. 2. Second law: A body of mass m subject to a net force F undergoes an acceleration a that has the same dire ...
... acted upon by an external unbalanced force. This means that in the absence of a nonzero net force, the center of mass of a body either remains at rest, or moves at a constant velocity. 2. Second law: A body of mass m subject to a net force F undergoes an acceleration a that has the same dire ...
Notes 2 for June 18 prepared by Melanie Smith Shusaku discussed
... If F is constant, E is constant, and since F = ma, the proton will move at a constant rate. We skipped going over this problem, as we have not gotten to it in the lecture notes yet. Electrical force and gravitational forces are two non-contact forces. In considering the fact that Coulomb’s Law equat ...
... If F is constant, E is constant, and since F = ma, the proton will move at a constant rate. We skipped going over this problem, as we have not gotten to it in the lecture notes yet. Electrical force and gravitational forces are two non-contact forces. In considering the fact that Coulomb’s Law equat ...
Fundamental interaction
Fundamental interactions, also known as fundamental forces, are the interactions in physical systems that don't appear to be reducible to more basic interactions. There are four conventionally accepted fundamental interactions—gravitational, electromagnetic, strong nuclear, and weak nuclear. Each one is understood as the dynamics of a field. The gravitational force is modeled as a continuous classical field. The other three are each modeled as discrete quantum fields, and exhibit a measurable unit or elementary particle.Gravitation and electromagnetism act over a potentially infinite distance across the universe. They mediate macroscopic phenomena every day. The other two fields act over minuscule, subatomic distances. The strong nuclear interaction is responsible for the binding of atomic nuclei. The weak nuclear interaction also acts on the nucleus, mediating radioactive decay.Theoretical physicists working beyond the Standard Model seek to quantize the gravitational field toward predictions that particle physicists can experimentally confirm, thus yielding acceptance to a theory of quantum gravity (QG). (Phenomena suitable to model as a fifth force—perhaps an added gravitational effect—remain widely disputed). Other theorists seek to unite the electroweak and strong fields within a Grand Unified Theory (GUT). While all four fundamental interactions are widely thought to align at an extremely minuscule scale, particle accelerators cannot produce the massive energy levels required to experimentally probe at that Planck scale (which would experimentally confirm such theories). Yet some theories, such as the string theory, seek both QG and GUT within one framework, unifying all four fundamental interactions along with mass generation within a theory of everything (ToE).