What is Reaction forces: Definition and 64 Discussions

A rapid reaction force is a military or police unit designed to respond in very short time frames to emergencies. When used in reference to police forces such as SWAT teams, the time frame is minutes, while in military applications, such as with the use of paratroops or other commandos, the time frame is hours to days.
Rapid reaction forces are designed to intervene quickly as a spearhead to gain and hold ground in quickly unfolding combat or in rather low intensity conflicts, such as uprisings that necessitate the evacuation of foreign embassies. Because they are usually transported by air, such military units are usually lightly armed, but often extremely well trained to compensate for their limited to small arms and light crew-served weapons and the lack of vehicles, armor and heavy equipment like tanks.

View More On Wikipedia.org
Recent contents Top users
  1. C

    Find Reaction forces using energy methods (curved beam portion)

    Homework Statement I think I am just overthinking this... So, the problem is as the picture details. It asks for the reaction forces and moments at each of the two ends (pin joints) using (strain) ENERGY METHODS in terms of the applied force F. the labeled lengths are the lengths of the...
  2. T

    .Calculating Reaction Forces and Moments for 3 Pin Frame ABCDE

    A 3 pin frame ABCDE is supported at A and E. it supports vertical loads of 60 kN at B 80 kN at c and 100 kN at D as well as a horizontal UDL of 50kNm along DE. Calculate the reaction forces. I have REV = 124 kN and RAV = 116 kN. REH = 115.3kN and RAH = 215.3 kN. Are these correct Next...
  3. M

    Static Equilibrium and reaction forces

    Static Equilibrium... Please help Homework Statement The J-shaped member shown in the figure is supported by a cable DE and a single journal bearing with a square shaft at A. Determine the reaction forces and at support A required to keep the system in equilibrium. The cylinder has a weight =...
  4. A

    Forces and reaction forces generated by a linear actuator

    A linear actuator is wedged between two solid walls as shown in the diagram below. The linear actuator is pushing outwards with a force of 10N. What are the magnitudes of the forces labelled in the diagrams? I reckon that F1 = F2 = R1 = R2. However, I'm not sure if F1 = F2 = 5N or 10N...
  5. A

    How Are Reaction Forces Directed at Points A and D in a Supported Beam?

    Homework Statement The uniform horizontal beam is hinged to the ground at A and supported by a frictionless roller at D. Distance A to B is 4 m, A to D is 3 m. A force P with a magnitude of 1000N makes an angle 60 degrees with the horizontal at point B. The total Weight of beam is 400 N. By...
  6. DaveC426913

    Can I Spin in Zero-G Without Moving Laterally?

    If I found myself floating in zero-G in a space station, with a propellant in my hand, is it possible to use the propellant to impart a spin without imparting any lateral movement? To myself up I'd hold the can at arm's length, and point it 90 degrees sideways (just like a maneuvering jet)...
  7. P

    Solid Mechanics, calculating reaction forces and M(X) for a cantilever thing

    Homework Statement Homework Equations M = F * D The Attempt at a Solution For a, I need to find the reaction force on the right side. So what I first did was make the sum of the moment on the left equals zero. 0 = M_0 + r_y * L. r_y = \frac{-M_0}{L} I think this is right...
  8. B

    Determining reaction forces and angle

    Homework Statement An assembly is shown in Figure 1, GH, HK and HNL are three cables. The mass of box L is 350 kg, a) Determine the mass of box K in order to make angle teta = 30 degrees b) Determine the reaction forces at supports G and N. i started by converting...
  9. G

    Reaction Forces of a simply supported thin plate

    I have a square thin plate 620mm*620mm that is simply supported on all four edges and is subjected to a uniformly distributed patch load (q0) over a central area of 58mm*58mm. I have calculated the central deflection to be (3.137x〖10〗^(-6) q0 (mm) via navier solution and the max stress in the...
  10. C

    Reaction forces at pin joint on a frame

    Homework Statement Basically, I am looking to find the reaction forces at the pin joint on the right side of the structure. I just realized it is not labeled on my diagram, but it is the pin on the link opposite of E. Where the 13 degree angle is measured from. Homework Equations I have...
  11. C

    Reaction forces in ball and socket joints

    Hi, I was just wondering in what directions the reaction forces go in ball and socket joints? Are there reactions in the x, y, and z plane or just in 2 of those planes.
  12. P

    Computing Reaction Forces of Supports A & B with a 2 Degree Load

    guys, how can u compute for the reaction forces of supports A & B w/ a 2 degree load...? a link is provided below thanks! http://img49.imageshack.us/img49/7876/19uh.jpg
  13. A

    Linear speed and reaction forces

    Just checking these other problems 1)Bicycle has wheels with circumference of 2m. What is the linear speed of the bicycle when the wehels rotate at 1 rev/sec. 2m/s 2) A 10,000N vehicle is stalled 1/4 the way across a bridge. What are the two additional recation forces that are...
  14. J

    Crane problem (reaction forces)

    Im having a bit of trouble with this problem: A crane of mass 5288.51 kg supports a load of 789.67 kg. The crane are is 7m long and the angle it makes wiht the horizontal is 47.627 degrees. The distance between the front and rear wheels is 4 m. Assume that the center of mass of the...
Back
Top