Resultant Definition and 505 Threads

I was wondering if someone could have a look at my attempt at calculating the resultant vector of 3 forces. Figure is here:http://tinypic.com/view.php?pic=2psrllz&s=6, and from the top down the forces are F1=24,9kN, F2=12,7kN and F3=21kN. The angles are(again from the top down) 56,4°, 15,3° and...

Homework Statement Find the resultant of the following vectors using these methods: triangle method, parallelogram method and mathematical method. Fa is a force vector with magnitude of 10.0N and makes an angle of 25.0 degrees with the x-axis. Fb is a force vector with a magnitude of 5.0N...

Homework Statement Let a system of forces (F1,...Fn) act on a body at points (x1,...xn) respectively. Assume that the resultant or net force vanishes (sum of forces = 0) Show that the resultant torque of this system is independent of the choice of origin, i.e. for 2 different origins x0...

Question: How do the Equilibrant and Resultant vectors relate to each other? My answer: They relate to each other because they are both vectors. Equlibrant is when forces are equal, but opposite each other, thus brings an object to an equilibriam state. A resultant vector is two or more vectors...

Me again, (this is what happens when you make a designer do mechanics, and give her a lecturer she doesn't understand :P ). I'm stuck on a combined loadings question. This is the question: "The 60 mm diameter rod (fixed at end C on the wall) is subjected to the loads shown. 1) Transform...

Homework Statement Graphically determine the resultant of the following three vector displacements: 1) 24m, 30 degrees North of East 2) 28m, 37 degrees East of North 3) 20m, 50 degrees South of West Homework Equations The Attempt at a Solution I have the vectors drawn but I...

Question regarding the "elevator" acceleration resultant force Homework Statement In the "elevator" case, when a man is standing on a weighing scale, and the elevator accelerate upwards, the resultant force acting on the man will be UPWARD force, and the man is feeling "HEAVIER". So here is...

Homework Statement http://i.imgur.com/NcI8y.png?1 So i did A and got the answer of Fr to be {-129i, -221j} N and the Mra = -354k Nm which are right from the answer key so now about part b I think I should balance all moment at the G point about z axis or something like that thus...

Homework Statement A 0.30-kg mass attached to the end of a string swings in a vertical circle (R = 1.6 m), as shown. At an instant when θ = 50°, the tension in the string is 8.0 N. What is the magnitude of the resultant force on the mass at this instant...

My question is to find the resultant just take the x,y components of each force, find the magnitude by squaring them and taking the square root. My question is after doing that how would i find the perpendicular and horizontal distances. My teacher put a study guide for our test and it said...

1.Two concurrent forces act on a box. The first force acts east at 13 Newtons and the second force acts west at 17 Newtons. What is the net force acting on the box? >Draw each vector using the tip to tail method. >Draw your resultant and label it "R" >With your ruler determine the...

An airplane has an air speed of 4.20 × 10^2 km/h [N 45° E]. The wind speed is 30 km/h to the west. a) What is the airplane’s resultant velocity? I decided to use the trigonometric solution, but I am confused on how to break the equation down in order to get 399 km/h c2 = a2 + b2 - 2ab.cosC c2...

Homework Statement The concrete slab supports the six vertical loads shown. Determine the x- and y-coordinates of the point on the slab through with the resultant of the loading system passes. Image attached Homework Equations The Attempt at a Solution I started off by...

Hello, I hope this is a suitable forum, it's a million miles from homework but it may be on the same sort of level. A picture is worth a thousand words so please have a look at the attached picture. When the rope is pulled there isn't just the issue of gravity, but also of the friction of...

I've figured out the resultant force on the gate by adding the magnitudes of F1, F2, and F3. However, I'm trying to figure out the distance b such that there is absolutely no force acting on the stop at point B. Is this even possible? It seems like it isn't, since all forces are pointing to the...

Hey, sorry for the basic question, but I'm curious. Can one create a resultant for 2 vectors that cannot be drawn head- to - tail, and are facing opposing directions? The idea is that I set up a force table and took measurements on how many Newtons of force are acting upon each spring...

Homework Statement Replace the force-couple system at point O by a single force. Specify the coordinate yA of the point on the y-axis through which the line of action of this resultant force passes. Homework Equations The Attempt at a Solution I'm not sure how to start this...

[b]1. Homework Statement : The Attempt at a Solution I keep attempting this problem and so far I have got this: F1x: 150 F1y:260 F2x:424 F2y:424 F3x:600 F3y:250 Then I add the x's together and y's together, square both and take the square root for magnitude, but can't seem...

Homework Statement A map suggests that Atlanta is d1 = 730 mi in a direction of θ1 = 5.12° north of east from Dallas. The same map shows that Chicago is d2 = 559 miles in a direction of θ2 = 21.0° west of north from Atlanta. Modeling the Earth as flat, use this information to find the...

Homework Statement http://session.masteringengineering.com/problemAsset/1127110/6/Probs.2-39_40.jpg I will refer to this picture for the problem. I have to find the resultant of the three force vectors. I know all except F1 and theta. I am given it for this problem to find the resultant...

Homework Statement (i) Find the resultant force acting at point D and write it in Cartesian form. (Note that CD is parallel to the y-axis, the 40N force acts parallel to the z-axis and the 30N force is parallel to the x-axis.) (ii) Find the magnitude of the projected component of the...

Homework Statement A boat is sailing on a bearing of 120° and has a speed of 4ms^-1 relative to water. A current has a speed of 2ms^-1 and flows south west. Find the resultant speed of the boat 2. The attempt at a solution I've been stuck on this question for an hour now and can't...

Hey guys, how are you? I feel so stupid right now, I'm having a hard time getting my mind straight, which of the two resultant force diagram on the right is right? Typically its a slider with a ball and spring that slides on a recess (cam type). I want to know the force required on the slider...

Homework Statement Consider the objects X and Y, each of mass 8000kg and 2000m apart where XYP forms an equilateral triangle. Determine the resultant gravitational field strength at point P due to objects X and Y. Homework Equations G= GM/R^2 The Attempt at a Solution

Homework Statement Hi all, I've been given a question for homework and I am not 100% sure how to do it exactly! I have included a diagram or the situation Homework Equations The question is Find the resultant force on the block (picture attached) The Attempt at a Solution What i did...

Any help on where I start with this question. Need to convert each force into its horizontal and vertical components, but don't know any angles apart from the 70N force acting straight down.

So, I'm writing a code to solve Hamilton's equations for a free classical particle incident on different potential barriers in 1D. I'm eventually going to be using this for some sort of semi-classical analysis, but for now have to get this working as expected. I first tested it using a...

Given Info: 4 m/s [N30°E] and 5 m/s [S17°E]. FIND: The Resultant Vector And it's angle.So I'm having a big problem with figuring the angles between the two vectors... I feel like I'm doing it correctly, but at the same time I'm not sure... Here's my diagram. http://i47.tinypic.com/x38osl.jpg So...

Homework Statement Suppose you have two 2D circles, where size ≈ mass, each of which is moving with known x- and y-velocities. The two collide, not necessarily head-on (one could broadside the other, etc). How do I calculate the resultant velocities, assuming no elasticity or friction...

Homework Statement I need to show that the waves: sin((kx)+(θ/2)) and sin((kx)-(θ/2)), differing in phase by θ, add to give a resultant wave 2sin(kx)cos(θ). But the answer I get is different so I'm not sure how to do this. Homework Equations sinA + sinB = 2sin((A+B)/2)cos((A-B)/2)...

I need help on how to solve this Homework Statement Three vectors, expressed in Cartesian coordinates are : S -> x( -3.5), y(+4.5) T -> x(0), y(-6.5) U -> x(+5.5), y(-2.5) what is the magnitude of the resultant vector S + T + U? The answer, according to my answer sheet is 4.9...

Heres the question: Two charges (one is +4μC, the other is -8μC). They lie on 80mm apart, so you can imagine that the +4μC charge is on the left and the -8μC is on the right. Point P is equidistant from the two charges, draw two arrows at P to represent the directions and relative magnitudes of...

Homework Statement Three forces: F1, F2 and the other with a magnitude of 40 N act on the ring bolt as shown in Fig. C.1. The resultant, R, has a magnitude of R = 180 N and acts at an angle of 80° anti-clockwise from the x-axis. Determine the magnitudes of F1 and F2. Homework Equations...

Homework Statement A 55 kg student stands on a 4.6 kg surfboard moving at 2.0 m/s [E]. The student then walks with a velocity of 1.9 m/s [E] relative to the surfboard, relative to the water. Neglect Friction. Answer: 0.25 m/s[E] Homework Equations m1vi1 + m2vi2 = m1vf1 + m2vf2 The...

relative velocity and resultant velocity?also in a connected(with strings) pulley system,how can we calculate the acceleration and velocities of the pullies and the masses connected onto it?

The following problem is one I have contrived by my own ability, so if there is any error please let me know. Say I have a box, with a chain attached at one of the edges of the box, and I apply 10 N pull at a 40° angle with the surface of the box. Now I know we sometimes resolve vectors into...

Homework Statement I am having quite an issue solving this resultant force question: The following forces act on a point in the same plane: 40N direction due north; 10N direction due east, 40N direction 50° south of west, 20N direction northwest and 15N direction 20° south of east...

Hi everyone, This appears to be a trivial question but I'm uncertain to the correct answer. If I have forces of 3N, 4N and 5N in the x,y and z directions respectively. The resultant force will be the square root of these components squared ≈ 7N. If I want to describe any of the components...

Homework Statement Apply the principle of superposition to draw the resultant shape when each of the sets of pulses shown interferes. (Draw the diagrams so that the horizontal midpoints of the pulses coincide.) Homework Equations Please check this website...

Homework Statement a boat heads north at 3.4 m s^-1 across a river that flows East at 1.6 m s ^-1. 1)Calculate the resultant velocity of the boat and the time taken to cross the river which is 180 m wide. 2)What is the distance traveled from its starting point when the boat reaches the...

When you have waves that are out of phase by some fraction of a cycle, e.g not exactly in phase and not exactly 180 degrees anti-phase, how do you determine the phase (relative to the original component waveforms) of the resultant? Specifically, is there an equation that solves for phase...

I know that when I have cable connected, the resultant vector of each cable will point at the direction of the angle it's connected in. http://img26.imageshack.us/img26/8454/wiresn.jpg BUT, suppose we switch all these cables to rigid body structures like beams. I cannot make the same...

Two waves are perfectly superposed (traveling same direction), but are 90 degrees out of phase. Does this result in destructive or constructive interference, as the waves could be seen as either half anti-phase or half in-phase. For example, the first wave has an amplitude of 1. The second wave...

Homework Statement Homework Equations ƩMoments = Moment + Fx*d + Fy*d R = (Fx)i + (Fy)j The Attempt at a Solution I'm only interested in part (ii) I calculated the components of the resultant force and they are |R| = 1.15(i) + 9.36(j) I know that the x-intercept of line of action...

I have just been given my first assignment and I have calculated all the data, but there is no clear writing that says what answer they want. Im sorry if this is a stupid question but i have just started physics, anyway i have been given three forces which had to be converted to cartesian...

I need to find the resultant force for two separate forces - F1,3 and F2,3. F1,3's components are x= -.719 and y= -.54. F2,3's components are x= .719 and y= -.54. The angle between the q1-q3 line and the x-axis is 36.9. F1,3 and F2,3's magnitude is .899 N. Can someone help me?

Homework Statement An airplane starting from airport A flies 300 km east, then 350 km at 30.0" west of north, and then 150 km north to arrive finally at airport B. The next day, another plane flies directly from A to B in a straight line. In what direction should the pilot travel in this...

Homework Statement A spider is resting after starting to spin its web. The gravitational force on the spider is 0.165 N on the junction of three strands of silk. The junction is supported by different tension forces in the two strands above it so that the resultant force on the junction...

Homework Statement Determine the magnitude of F if the resultant of the three forces passes through point O. Homework Equations ƩFx = 0 ƩFy = 0 ƩM = 0 The Attempt at a Solution The most I can come up with is that the two forces on the left would equal F on the right, and...

Homework Statement Starting at the origin of coordinates, the following displacements are made in the xy-plane (that is, the displacements are coplanar): 60 mm in the +y-direction, 30 mm in the Ñx-direction, 40 mm at 150°, and 50 mm at 240°. Find the resultant displacement both graphically...