Resultant Definition and 505 Threads

1. You launch a projectile from a wall that is 2 meters in height. It lands on the ground 2 seconds later. -What is the initial upward velocity of the projectile at the moment of launch? -What is the initial resultant velocity of the projectile at the moment of launch?2. Equations given: - v =...

So we know that an object undergoing horizontal circular motion, has a angular velocity with direction perpendicular to the plane of motion, and also a linear velocity with a direction perpendicular to the acceleration towards the centre of motion Question : if we sum/add the linear+angular...

Hi all, Having difficulty understanding the above resultant wave form, been looking at power electronics (C.W.Lander) but don't quite get the addition of the wave forms (positive and negative cycles)can anyone point me to some reading of theory I am missing for this, thanks.

Homework Statement This is the force table lab that we are doing. F _1 = 300g @ 30^o F _2 = 450g @ 110^o F _3 = 400g @ 230^o F _4 = 270g @ 298^o Finding resultant force using Component Method 1. Express each force F1, F2, and F3 in unit vector notation. Take the origin to be at the center...

Homework Statement I managed to get Fy = 900N , Fx = 200N and FR= 922N , how to get the distance from A is 3.56m ? tetha= arc tan (922/200) = 77.5 degree Homework EquationsThe Attempt at a Solution

1. The problem statement, all variables and given/known dat A car travels 20 mi at 60 degrees north of west, then 35 mi at 45 degrees north of east. Express each displacement vector in unit vector notation. Take the +x-axis due east and the +y-axis due north. Use the component method to obtain...

Homework Statement Find P-Q (P=11.5 kN, Q=12.5kN) Homework Equations x-component = cos(angle)*force y-component = sin(angle)*force Pythagorean Theorem (to find resultant magnitude): c2 = a2 + b2 arctan (y-component / x-component) : to find angle of resultant The Attempt at a Solution The...

Hello, I am having trouble finding the direction of the resultant of this statics homework problem. The picture uploaded is exactly how it is shown in my book. The problem states: Homework Statement For the forces shown, S = 3.81 kip, T = 4.73 kip, and U = 3.65 kip. Determine the resultant...

Homework Statement Posted in picture below Homework Equations Bernoulli's Equation P/pg + v1^2/2g + z1 = P/pg + v2^2/pg + z2 The Attempt at a Solution Posted in picture below Wasn't sure if what I did was correct...still practising the topic itself

Homework Statement 4-70 Two couples act on the beam. If F=125 lb. determine the resultant couple moment. Homework Equations M=Fd The Attempt at a Solution I know CW is + and CCW is - ...and that is determined in the final answer, I know the solution is taking Forces times the distance...

1. The problem statement, all variables and given/known dat the ans given is 52.8N . I tried to let Fx and F y =0. for Fx , I have 120-20(12/13) -170(8/17)=21.5N (to the right) for Fy , I have 90-170(15/17) = -60N( in upwards direction ) but my ans is incorrect = 63.7 N ( by using resultant...

the moment is r X F = rFsin tetha which means r is projected to F , am i right . If so , then the resultant force should point downwards( by using right hand thumb rule) , am i right?

Homework Statement The figure depicts the sum of two velocities, vA and vB. The value of the sum is7 m/s and the angles shown in the image are θ1 = 29.8°, and θ2 = 18.3°. Homework EquationsThe Attempt at a Solution

Homework Statement The figure depicts the sum of two velocities, vA and vB. The value of the sum is7 m/s and the angles shown in the image are θ1 = 29.8°, and θ2 = 18.3°. Homework EquationsThe Attempt at a Solution I have no idea where to even begin on this

Homework Statement Force A has a magnitude of 200lb and points 35° N of W. Force B points 40° E of N. Force C points 30° W of S. The resultant of the three forces has a magnitude of 260lb and points 85° S of W. (a) What is the magnitude of Force B? (B) What is the magnitude of Force C...

Please see the attached image. I understand the area represents the resultant force per unit width. But I'm unsure what equation to come up with for the purple area. I'd appreciate a little patience here, it's been ages since I did this. Thanks

Hello Friends, I want to discuss about methods to find resultant force for number of forces acting simultaneously on a body in same plane have a look at this http://www.scienceinfusion.com/force-and-composition-of-forces/'][/PLAIN]...

Homework Statement F1 = 10N at 37 N of W F2 = 15N North F3 = 14 N toward the negative z-axis F4 = (8i + 12j + 4k)N Find the resultantThe Attempt at a Solution I use 10cos37/sin37 for F1 I use 15cos0/sin0 for F2[/B] But I don't how to use F3 and F4 Please help thankyou guys!

Homework Statement Hi all, It is a homework problem, but I really don't quite understand the question. It reads- "3 forces of magnitudes 10N, 20N, and 30N acting on a point are parallel to the sides of an equilateral triangle, taken in order. Find their resultant"Homework EquationsThe Attempt...

Homework Statement I know that centripetal is the resultant force acting to enable the a body to move in a circular path ... But , in the triangle , the R3 looks like the resultant force ..Can someone tell me which is the correct resultant force in this diagram ? What is R3 actually ...

Homework Statement [/B] The block shown in Fig. P-223 is acted upon by its weight W = 200lb, a horizontal force Q = 600lb and the pressure P exerted by the inclined plane. The resultant R of these forces is up and parallel to the incline thereby sliding the block up it. Determine P and R. Hint...

haruspex submitted a new PF Insights post Frequently Made Errors - Pseudo and Resultant Forces Continue reading the Original PF Insights Post.

Find the resultant of each pair of forces acting on an object Q: forces of 6 N southwest and 8 N northwest I got 10 for the resultant, but how do I find the angle? The answer is apparently is 10 N, N82degW Having a hard time visualizing this...

Hi everyone, I need steps and some guidance on how to solve questions like this. I know how to do right triangle questions using the Pythagorean method, but when it comes to these non right angle triangles I get so confused. Help! 1. Homework Statement Homework Equations a) The magnitude...

Hello, I've got one problem with fluid flow reaction force which acts on compressor. I hope you can help me with that. Here is a sketch to my question: I wonder in which direction resultant force will be directed. I understand that air is flowing from left to right with inlet velocity V1...

Homework Statement An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.270rev/s . The magnitude of the angular acceleration is 0.902rev/s2 . Both the the angular velocity and angular accleration are directed clockwise. The electric ceiling fan...

Homework Statement Michael starts spinning the rope at a rate of 2.00 rad/s^2 while he starts running towards the target at 4.00m/s^2. This distance betweens Michael's elbow and the end of the rope form a straight 1.2m segment. If Michael takes 3 seconds before he launches the rope at the...

Homework Statement m Homework EquationsThe Attempt at a Solution

Homework Statement See the attached sheet, I had missed todays class due to dentist and I found out we had an assignment due today by end of day, I am having trouble learning this on my own, I am trying right now. Could anyone help me with the solutions? Homework Equations Question one is...

Homework Statement There are 3 charges, each denoted q, the first at (0,a), the second at (0,0) and finally one at (b,0). What is the resultant electric field at point P, (b,a)? Homework Equations E[/B]=q/(4πεo r2) for a point charge The Attempt at a Solution So I know I need to use the...

Hi! Can anyone help me with these problems? When I try to draw a parallelogram, I couldn't find the angles. Please help. http://imageshack.com/a/img673/8733/GsXt9f.jpg http://imageshack.com/a/img910/1949/1AB7iB.jpg

1. Homework Statement The electric fields from three coherent sources are described by E1 = E0 sin omega t, E2 = E0 sin(omega t + phi), and E3 = E0 sin(omega t + 2phi). Let the resultant field be represented by EP = ER sin(omega t + alpha). Use phasors to find ER and alpha when (a) phi = 20.0...

Homework Statement A 12 m long uniform ladder, weighing 285 N, leans against the wall. The foot of the ladder is 6.5 m away from the wall. Determine the reaction components and the resultant reaction(magnitude & direction) if the coefficient of friction for static at the wall and the floor are...

Homework Statement Three vectors A, B, C have magnitudes A=5, B=6 and C=7. The minimum value of |A+B+C| is *A represents magnitude, A represents the vector (magnitude and direction) Homework EquationsThe Attempt at a Solution I got 4 because I think that the maximum possible cancellation...

[Moderator's note: No template because the thread had attracted a fair number of responses before being moved out of Classical] Hey it's my first post, so I apologize in advance if this is under the wrong forum category... I am just wondering if I did I do this right? If not can you please...

Hi! (Smile) I want to find the discriminant of $g(x)=X^3+pX+q$. $$Res(g,g')=(-1)^{\frac{3(3-1)}{2}} D(g(X)) \Rightarrow Res(g,g')=-D(g(X))$$ $$Res(g,g')=det\begin{bmatrix} q & p & 0 & 1\\ 0 & q & p & 0\\ p & 0 & 3 &0 \\ 0 & p & 0 & 3 \end{bmatrix}$$ How can we find the above determinant...

So I'm a little bummed out about this one, I'd appreciate the help. Apparently the correct answers should be Fcd = 350lb, Fbe = 1531.25lb, or 1.53 kip. Problem can be viewed here: http://i.imgur.com/pK79lVN.png Here's my attempt at solution album: http://imgur.com/a/GQsxJ What can I do? Did I...

angle between two vectors is 90 degrees ,and they are added by parallelogram method ,what will be the angle between resultant and any of the two vectors?shouldn't it be necessarily 45 degrees in such case which i have mentioned i.e when angle between two vectors is 90 degrees

Homework Statement A uniform disk with radius 0.390m and mass 27.0kg rotates in a horizontal plane on a frictionless vertical axle that passes through the center of the disk. The angle through which the disk has turned varies with time according to θ(t)=( 1.50rad/s)t+( 9.00rad/s2)t2 . What is...

Find the result force of the two forces. This problem seemed easy at first, but I think I'm confused as to how to find the coordinate angle (gamma) . For the ( i,j,k) components of F1, I got (300cos(30)i, 0j, 300sin(30)k) I don't understand the function of the 45 degree angle, either. What am...

In tightening a bolt whose center is at point O, a person exerts a 180-N force on the ratchet handle with his right hand. In addition, with his left hand he exerts a 90-N force as shown in order to secure the socket onto the bolt head. Determine the equivalent force–couple system at O. Then find...

Hi, For the following image, we have to calculate the resultant of those two forces. I have broken them down to their components. Did I do this correctly because when I actually solve for the force I am not getting the correct answer of 940N in the back of my book. Also, I tried calculating the...

Homework Statement The energy transferred per second by a progressive waves is directly proportional to the square of amplitude . If two different amplitude waves superpose , the energy per second transferred by the resulatant waves us direcly proportional to (ANS: the diffrence of...

Homework Statement determine the magnitude of the force F3, so that the resultant FR of the three force is as small as possible. F1= 20KN [E36.9N] F2= 12KN [S] F3= x KN [W45N] Homework Equations Fx= xcosθ Fy= xSinθ FR = F1 + F2 + F3 The Attempt at a Solution i used component...

I need help finding out the formulas for finding out the resultant magnitude and the resultant vector. Any help is welcome. Thanks

Homework Statement Instructions for finding a buried treasure include the following: Go 572.7 paces at 223◦, turn to 156◦ and walk 124 paces, then travel 417 paces at 242◦ I have already found the magnitude...1015.66 paces Now I need to find the resultant displacement... What is the...

Homework Statement A man pushing a toy car causes it to undergo 2 displacements. The first has a magnitude of 150 cm and makes an angle of 120degrees with the positive x axis. The resultant displacement has a magnitude of 140 cm and is directed at an angle of 35 degrees at the positive x...

Homework Statement Determine the vectors A-C, given the vectors A and C in Fig. 3-32. Vector A=44.0 at 28 degrees north of east and vector C=31.0 at 90 degrees south of east. Homework Equations I don't know any. The Attempt at a Solution 44.0-31.0=11.0, 28.0-90= -62 The answers...

Homework Statement If the coordinate direction angles for F3 = 650lb are α = 110∘, β = 25∘ and γ = 76∘, determine the magnitude of the resultant force acting on the eyebolt. FIGURE: Homework Equations ? The Attempt at a Solution ? New semester, and so happy to start with a...

We are using a smart phone app to add vectors; once we get the resultant angle, we need to determine what direction the vector is based on the compass. Can someone easily explain how to do this? Example: Using the app, we input a 2 knot current toward 230 degrees and a 0.7 knot wind speed...