Resolving forces Definition and 34 Threads

Hello all, I am sadly stuck on the last part of a circular motion question sheet I was given for homework. I have a mark-scheme with me, but it has actually given me more questions than answers. I have attached my working, and how I arrived at my answer, and the differences it has with the...

I need help with the following question please. I understand that the person carries on in straight line while is jumping. This is because there is no horizontal force acting on him so based on Newton's first law of motion he continues with the previous speed. I know he should land on A or B...

Hi I'm very stuck on what to do for these 2 questions I got wrong Can someone please help me on what triangle I need to sketch out in order to find the 2 components of forces for F1 and F2. I'm assuming you have to make use of the sine or cosine rule here I'd be grateful for any help given...

Resolving the weight of the cylinder c, i get Mgcosθ (-y) and Mgsinθ (-x) mgsinθ - Fs - T = ma ---(1) (where Fs is frictional force and T is tension) τ = I α (where τ is torque and α is angular acceleration) torque is produced by both tension and frictional force (T-Fs) * r = 0.5 m r^2 α...

Homework Statement A mass of 50 grams hangs in equilibrium on a string. The mass is pulled aside and upwards by a force of 0.3N which makes an angle of 30° with the horizontal. Find the angle that the string makes with the vertical and the tension in the string. Homework Equations Body is in...

Homework Statement On a model ship, the mast OC has length 50 cm and weight 20 Newtons. The mast is hinged to the deck at O, so that it can rotate in the vertical plane of the ship. Small smooth rings are fixed at points A and B on the deck in this plane such that AO=OB=50 cm. Threads from C...

Homework Statement Homework EquationsThe Attempt at a Solution I've resolved all the relevant forces (tension, weight, normal force), but upon looking at the mark scheme, there is no normal force to be resolved. Forgive me if I'm missing out on something obvious, but shouldn't there be a...

Homework Statement A light elastic string of natural length 0.3m has one end fixed to a point on a ceiling. To the other end of the string is attached a particle of mass M. When the particle is hanging in equilibrium, the length of the string is 0.4m. (a) Determine, in terms of M and g (take g...

Homework Statement Determine the magnitude of the resultant forces and direction of the resultant as measured clockwise from the positive x axis. Homework EquationsThe Attempt at a Solution Please help. I have entered my answers into masteringengineering.com and it keeps telling me my answers...

Homework Statement Solve for the forces P and N acting on an object in equilibrium on an inclined plane. Weight=10N, angle is 30 degrees http://blob:https%3A//www.physicsforums.com/d431a152-5681-411b-ba57-809320539165 Homework Equations Trigonometry, i.e. sin, cos, tan rules. The 'Z' rule...

I have problems with this question: This is how I resolved v into its components (Vr and Vtheta): So with this I get Vr = - V cos theta Vtheta = V sin theta However in my solution booklet the components are the other way around (Vr = - V sin theta, Vtheta = V cos theta) and I cannot...

Homework Statement In earlier days, horses pulled barges down canals in the manner show in the figure below. Suppose that the horse pulls on the rope with a force of 7900N at an angle of 18 to the direction of motion of the barge, which is headed straight along the canal. The mass of the...

http://imageshack.us/photo/my-images/853/bridgel.png/ I don't answers course just some guidance. I need to find the forces at each joint, and stresses inbetween too. I've calculated the reaction forces by taking moments as 779N at far left and 692.5N at far right. Now I'm using trig of...

So I have a motor and this motor will turn a screw and bring a platform down to expose fairings during rocket flight. The platform is connected to the fairings. Due to drag pushing the fairings down there will be an upwards force pushing the platform against the screw holding it down. The...

(Before I start, due to the use of vectors let me state I consider up to be positive and down to be negative) Imagine a scenario, of a man in an elevator. And the elevator is accelerating upwards. Now in this case the Normal force > weight. So Normal Force - Weight =mass X acceleration. If...

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 particle P of mass 4 kg moves along a horizontal straight line under the action of a force directed towards a fixed point O on the line. At time t seconds, P is x metres from O and the force towards O has magnitude 9x Newtons. The particle P is also subject to air...

Homework Statement A pin-jointed frame (diagram attached) is formed of steel rods of 10mm diameter with member AC being 2m long. If a load of 50kN is applied at A as shown, determine the deflection of A and the force in the three rods. Take E = 200kN/mm^2. Homework Equations FA→B =...

Homework Statement I'm struggling with question 6 and 7 on this exercise. I have no idea where to start so basic help would be needed to get me started. Thanks!

Homework Statement there is a composite shape (cone with ring attached at open end) total mass 52kg,cone m=22kg, ring=30kg find the 2 forces acting vertically upwards. the shape is lying on its side 21deg from the horizontal. Homework Equations (xtotal x mtotal) = (xcone x mcone) +...

Resolving Forces - Shear and Bending Moment - :) Homework Statement The data table and associated questions are rather complex, if you have the time it would be much appreciated if you could have a look at the attachment and provide me with a solution or point me in the right, i just can't...

Homework Statement Two cylinders of equal radii each have weight W. They are at rest on a smooth slope of inclination A° to the horizontal, the lower of the two cylinders being in contact with a smooth vertical wall as shown in the diagram. Find, giving your answer in terms of W and A°, the...

Ok, this is a stupid question, but which way can I resolve the force F acting horizontally? [PLAIN]http://img843.imageshack.us/img843/2646/vectorsw.jpg If I want to resolve the force F along the black member, then why does force along the black member if resolved using the blue triangle...

1. Three guy wires hold a pole BO as shown. The resultant R of the forces due to the three wires has a magnitude of 1000-N and is directed on the pole BO. Force F2 and F3 have a magnitude of 400-N and 500-N, respectively. The distance from point A to point D is 5-m. Find the tension in cable...

This is irritating me so much, if you guys could help that would be great. there is a mass hung from a celling. two wires connect to one wire which connects to the mass. i have resolved the forces as follows : Fx=0= -T1cos37 + T2cos53 Fy=0=T1sin37 + T2sin53 – T3 T3 = 125N as this is...

Homework Statement Hi there I have attached a copy of the question to this post. I have never come across this, and don't really know where to start. Any pointers much appriciated. Thanks in advance, Mike Homework Equations The Attempt at a Solution

Homework Statement An object has a weight of 20N. It is supported by three strings to keep it in equilibrium, all attached to a smooth ring on the object. String A has a tension of 15N to the right of the block. String B is (a)degrees away from string A and String C is 90degrees away from...

Hi, Attached is a link to an image: http://i423.photobucket.com/albums/pp315/skaboy607/Image.jpg Probably a very easy question but I can't work out how they get the vertical and horizontal reaction forces to be F/cos(fi) and Ftan(fi). Any help would be most appreciated. Thanks

Homework Statement Hi guys, i hope this is posted in the right area, i have been struggling on the following question. Sorry about the diagram but i don't have a scanner I have a pin frame BCFGD and need to resolve the forces. It is attached to a wall at B and F. There is a negative force...

Homework Statement A block of wood of mass 4 kg is released from rest on a plane inclined at 30 degrees to the horizontal. Assuming that the surface can be modeled as smooth (no friction) calculate the acceleration of the block, and its speed after it has moved 3m Homework Equations...

Homework Statement Forces of magnitude 4N, 5N and 8 N act on a particle in directions whose bearings are 000° , 090° and 210 ° respectively. Find the magnitude of the resultant force and the bearing of the direction in which it acts http://img251.imageshack.us/img251/6527/87818117yf6.jpg...

1. Homework Statement : In the figure, a stationary block explodes into two pieces L and R that slide across a frictionless floor and then into regions with friction, where they stop. Piece L, with a mass of 2.2 kg, encounters a coefficient of kinetic friction µL = 0.40 and slides to a stop in...

Hi. Could someone please show me how to draw the diagram for the following question as I am really stuck. I would really appreciate any help. I have already drawn a diagram but must have labelled the forces incorrectly as my subsequent answers do not match the ones in the back of the...

Hi, I have my first year university exam coming up soon and this type of question seems to feature quite prominently in the past paper questions we are given where I have to take moments about a point and also resolve forces horizontally and vertically. I suppose the best way to show you would...