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Block on a ramp and corresponding free body diagram of the block. In physics and engineering, a free body diagram ( FBD; also called a force diagram) [1] is a graphical illustration used to visualize the applied forces, moments, and resulting reactions on a body in a given condition. It depicts a body or connected bodies with all the applied ...
Newton's laws of motion are three physical laws that describe the relationship between the motion of an object and the forces acting on it. These laws, which provide the basis for Newtonian mechanics, can be paraphrased as follows: A body remains at rest, or in motion at a constant speed in a straight line, except insofar as it is acted upon by ...
The concept of force makes the everyday notion of pushing or pulling mathematically precise. Because the magnitude and direction of a force are both important, force is a vector quantity. The SI unit of force is the newton (N), and force is often represented by the symbol F . Force plays an important role in classical mechanics.
There are two main descriptions of motion: dynamics and kinematics.Dynamics is general, since the momenta, forces and energy of the particles are taken into account. In this instance, sometimes the term dynamics refers to the differential equations that the system satisfies (e.g., Newton's second law or Euler–Lagrange equations), and sometimes to the solutions to those equations.
t. e. In physics and mechanics, torque is the rotational analogue of linear force. [ 1] It is also referred to as the moment of force (also abbreviated to moment ). The symbol for torque is typically , the lowercase Greek letter tau. When being referred to as moment of force, it is commonly denoted by M.
In negotiation theory, the best alternative to a negotiated agreement or BATNA (no deal option) refers to the most advantageous alternative course of action a party can take if negotiations fail and an agreement cannot be reached. The BATNA could include diverse situations, such as suspension of negotiations, transition to another negotiating ...
The United States Army Special Forces ( SF ), colloquially known as the " Green Berets " due to their distinctive service headgear, is the special operations branch of the United States Army. [ 9] Although technically an Army branch, the Special Forces operates similarly to a functional area (FA), in that individuals may not join its ranks ...
e. A centripetal force (from Latin centrum, "center" and petere, "to seek" [ 1]) is a force that makes a body follow a curved path. The direction of the centripetal force is always orthogonal to the motion of the body and towards the fixed point of the instantaneous center of curvature of the path. Isaac Newton described it as "a force by which ...
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