Dynamics Definition and 1000 Threads

General Dynamics Corporation (GD) is an American publicly traded, aerospace and defense corporation headquartered in Reston, Virginia. As of 2020, it was the third-largest defense contractor in the United States, and the third-largest in the world, by sales. The company is a Fortune 100 company, and was ranked No. 83 in 2020.Formed in 1954 with the merger of submarine manufacturer Electric Boat and aircraft manufacturer Canadair, the corporation today consists of ten subsidiary companies with operations in 45 countries. The company’s products include Gulfstream business jets, Virginia- and Columbia-class nuclear-powered submarines, Arleigh Burke-class guided-missile destroyers, M1 Abrams tanks and Stryker armored fighting vehicles.
In 2020, General Dynamics had worldwide sales of $37.9 billion and a workforce of more than 100,000 full-time employees. The current chairman and chief executive officer (CEO) is Phebe Novakovic.

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  1. S

    Maximizing Friction Coefficient for Block on a Wedge: A Calculus Approach

    Homework Statement A block of mass m is placed on a rough wedge inclined at an angle α to the horizontal, a distance d up the slope from the bottom of the wedge. The coefficient of kinetic friction between the block and wedge is given by µ_0x/d, where x is the distance down the slope from the...
  2. F

    How Does the Angle of Inclination Affect Motion in Rigid Body Dynamics?

    Homework Statement In the figure there are a block 1 of mass ##M##, a pulley (disk) of mass ##M## and radius ##R## and a second block of mass ##2M## on an inclined plane with an angle ##\alpha## with respect to the horizontal. On this plane the static friction is ##\mu##. The wire does NOT slip...
  3. Arup Biswas

    Troubleshooting Mass & Spring Dynamics

    Please tell me which one is wrong! When I put a mass M on one end of a spring!
  4. U

    Fortran Fortran for Computational Fluid Dynamics Problems

    Dear, Everyone I am a new member here, nice to meet you.. First, I want to introduce my self, I am a master student of physics and I am studying CFD right now. It's a new topic for me and I will also do my research about simulation of fluid dynamics related to CFD. Actually, I got this topic...
  5. S

    Business major.... fluid dynamics question....

    Homework Statement I have a syringe filled with water. This syringe is a cylinder with a length of 3 inches (L), diameter of 1.5 inches (D). Attached to the syringe is a constant force spring, which pushes the plunger into the syringe with a force of 2 pounds (F). Ignore the friction between...
  6. rocdoc

    Dirac's Generalized Hamiltonian Dynamics Theory?

    I wondered if anyone might know of any open access materials, possibly lecture notes, on the content of the following papers or books. P.A.M Dirac, 1950, Can. J. Math. 2,147 "Generalized Hamiltonian Dynamics" P.A.M Dirac, 1933, Proc. Camb. Phil. Soc., 29, 389 "Homogenous variables in classical...
  7. K

    Finding the radius of the sphere

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  8. S

    Schools I want to focus on Fluid and/or soft body dynamics

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  9. F

    Origin and demonstration of Newton's second law

    At high school, we saw without demonstration the fundamental principle of dynamics (2th Newton's law), i.e : $$\sum \vec{F}=m \vec{a}\,\,\,\,\,\,\,\,\,eq(1)$$ after, at university, we saw another expression of this 2th Newton's law : $$\sum \vec{F}= \dfrac{d\vec{p}}{dt}\,\,\,\,\...
  10. K

    Block-pulley system and rotational dynamics

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  11. jamalkoiyess

    Classical Swarm Dynamics Introductory Book

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  12. chrononaut 114

    Past Exam Advanced Dynamics Question; Help, Please

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  13. |Glitch|

    I Action Dynamics of the Local Supercluster

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  14. M

    Newton's Third Law: Acceleration of box and worker

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  15. D

    Dynamics: Spring problem (Oscillation)

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  16. A

    Rotational Dynamics of a Grindstone

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  17. E

    Molecular Dynamics Simulation - How Do You Find Parameters?

    Hi all, I'm doing a bit of material science research at my university. I'm running molecular dynamics simulation programs like Lammps and Amber as part of it, and I'm pretty new to the whole thing (just like I'm pretty new to this forum). I'd like to ask, has anyone here used Amber to find their...
  18. W

    Comparing Generalised Momentum Calculations for Central Force Problems

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  19. bob012345

    Dynamics of Lorentz force on a current carrying wire

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  20. JTC

    Difference between Hamiltonian and Lagrangian Mechanics

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  21. S

    Rotating Bodies Around Origin: Analyzing Motion & Dynamics

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  22. Javier Mont

    About moving through the air and Newton´s 3rd law

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  23. P

    Fluid Dynamics -- a spherical particle immersed in water

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  24. S

    What is 'phase space in chaos theory and nonlinear dynamics?

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  25. S

    How Do You Calculate Velocity and Acceleration from a Position Vector?

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  26. A

    B Telescope and Stopwatch for the Mass of a Planet

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  27. J

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  28. F

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  29. M

    Find the tension in the cable and the force the ramp exerts on the tires

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  30. D

    Determining Coefficient of Friction for Two Boxes with Applied Force

    Homework Statement Suppose there are 2 boxes over a horizontal surface. One has mass M and the other one has mass m. The one with mass m is over M as shown in the picture and a horizontal force is applied to pull M. There is no friction between M and the surface, but there is friction between m...
  31. M

    Forces and Free-Body Diagrams in Real-World Scenarios

    Homework Statement I am just going over my class notes and I just wanted to clear up a few concepts regarding forces and free-body diagrams -- I'm either missing some forces or adding one too many: Identify the forces acting on objects in each of the following situations and draw a free-body...
  32. A

    Gravitational force acting between objects

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  33. A

    Newton's 3rd Law Dynamics Problem

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  34. A

    B What is the Net Force on a Banked Curve?

    I understand why when deriving the formulas for cars on banked curves, the net force in the Y direction is zero. However, when I google how to derive them, people say that there is a net force greater than zero in the X direction. This is not what my professor says in his explanations however...
  35. R

    Rigid body relative acceleration

    Homework Statement Rigid body (ship) rotate and moves around 3 axis (x,y,z) around the center of gravity. The position is of the center of gravity is not known. What is known: At a point (A) the accereleration, velocity and position and rotational acceleration, velocity and position are known...
  36. J

    How do I calculate the mass of a moving object?

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  37. P

    How Does a Nucleus's Mass Change After Emitting a Gamma-Ray Photon?

    Homework Statement A stationary excited nucleus decays to its grpund state by emitting a γ-ray photon of energy Eγ. The grpund state nucleus recoils in the opposite direction at speed v. Show that when v<<c the change of mass of the nucleus is approximately: me - mg = Eγ/c2 [1+ 1/2(v/c)]...
  38. A

    What is happening in this fluid dynamics problem and how can we approach it?

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  39. Z

    Finding the acceleration in a curvilinear motion (n-t)

    Homework Statement The mine skip is being hauled to the surface over the curved track by the cable wound around the 38-in. drum, which turns at the constant clockwise speed of 96 rev/min. The shape of the track is designed so that y = x2/28, where x and y are in feet. Calculate the magnitude of...
  40. Adrian59

    A Galaxy dynamics explained without DM or MOND

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  41. G

    Fluid dynamics: simulation of an oil system

    Good day folks! I am working on the simulation of an engine, and in particular the oil system makes my head ache. I already finished the calculations for viscosity and temperature, but now I'm stuck on coming up with formulas for pressure and flow rates. With what should I start? For...
  42. M

    What are the best resources for studying astrophysical fluid dynamics?

    i am an aerospace engineer and have good knowledge in fluid and gas dynamics and i want to study astrophysical fluid dynamics , should i study intro to astronomy and astrophysics ? and what are best books in astrophysical fluid dynamics ?
  43. mkematt96

    Dynamic Shear Force on a Brake Pad

    I'm looking for a way to calculate the shear force applied to a brake pad from stopping ( a small engine brake pad stopping a fly wheel). I know shear stress is shear stress/ area , would this apply for a dynamic application as well? Would I need to calculate the force to stop the flywheel at a...
  44. JTC

    A Split the differential and differential forms

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  45. K

    Dynamics of a point mass in circular motion

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  46. G

    Confused about tension in strings

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  47. Alexanddros81

    Pytels Dynamics 12.40: The rocket sled is propelled....

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  48. Alexanddros81

    Calculating Height h from a Projectile Launched at A

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  49. C

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  50. Alexanddros81

    Pytels Dynamics 12.39: A rocket is launched vertically

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