Vertical Definition and 997 Threads

Homework Statement A rigid uniform horizontal bar of mass m1 = 85.00 kg and length L = 5.300 m is supported by two vertical massless strings. String A is attached at a distance d = 1.500 m from the left end of the bar and is connected to the top plate. String B is attached to the left end of...

1. http://img214.imageshack.us/img214/2684/77965080tu2.jpg [/URL] I get (a) part but for the last part to find the vertical distances can someone explain what is done here. This is the solution let h be the vertical distance [SIZE="3"]h = y + xtan30 h= vot tan30 - 1/2gt^2...

... so that there are no seasons and it's spring forever? It would make many species go extinct. But is it possibly a good thing in the longer term? Imagine it's summer forever, like in Equador. Or spring forever, like in a flower conservatory. Is there anything wrong with this...

Hello everyone, I've used these forums quite a bit and found it very helpful thanks for all you kind souls helping us through the sciences, but today is my first post :P I am deriving the velocity of a projectile fired vertically through a retarding force and I continue getting every step the...

Homework Statement A 7400 kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.15 m/s^2 and feels no appreciable air resistance. When it has reached a height of 560 m, its engines suddenly fail so that the only force acting on it is now gravity. a...

[SOLVED] Vertical circular motion help! Homework Statement A 17.4 g steel marble is spun so that it rolls at 171.0 rpm around the inside of a vertically oriented steel tube. The tube, shown below, is 13.0 cm in diameter. Assume that the rolling resistance is small enough for the marble to...

I want to know where to look for information relating to toppling. I have looked at stability of equilibrium but the real question is: If say for arguments sake, there is a column 2m high and 1/4m wide - it would be easy, if we knew the weight of the column, to establish the force required...

vertical and horizontal asymptotes of the curve of f(x) = (x^2+x-6)/(9-x^2 ) are respectively : a) x=3,x=-3,y=-1 b)x=3,y=-1 c)x=3,y=1 d)x=-3,y=-1 i did the infinit limit to find the horizontal asymptote and i got -1 then to solve the vertical; 9-x^2 = 0 and...

Hi all, I'm wondering why we see those horizontal and vertical stripes of lights when looking at a light source (see e.g. http://apod.nasa.gov/apod/image/0601/pleiades_gendler_big.jpg" ). Why are these lines of light present in the first place and why are they only horizontal and vertical in...

HI I have to create a... tutorial.. for fackulty... the deadline is till tuesday... I try to find infos over the internet but .. i didnt find anything that could help.. I wonder if someone can help me.. The Topic is VERTICAL KINEMATICS... any info.. about this would be could,..

OK here goes... I have a 20kg weight attached to a 10 meter long wire rope. The rope is fixed vertically to a cross beam. The rope has an elastic stretch limit of 47.5 kN/mm^2. If I lift the 20kg weight up 1 meter and then let it go what would the maximum force exerted by weight be on the...

Homework Statement A uniform ladder of length L and weight w is leaning against a vertical wall. The coefficient of static friction between the ladder and the floor is the same as that between the ladder and the wall. If this coefficient of static friction is μs = 0.500, determine the smallest...

I have encountered some problems with this exercise: A ladder is leaning against a wall, it will slide due to its weight down the wall and along the floor. I am supposed to determine the time at which the ladder looses contact with the wall, but how? :S

Homework Statement A small rock of mass m is kicked from the edge of a perfectly vertical cliff of height h, giving it an initial velocity ~vo that’s purely horizontal. The rock lands at a distance d away from the bottom of the cliff. The ground there is assumed horizontal and we neglect air...

Homework Statement A door with weight Mg has a horizontal width W and a vertical length L. There are two hinges that hold up the door along the right side of the door. The top hinge is a distance d from the top of the door and the bottom hinge is a distance d from the bottom of the door...

I am having some difficulty in understanding vertical circular motion. As I understand it, the only time the object (lets say an aeroplane flying in a vertical circle) is in uniform circular motion is at the top and the bottom of the circular path. So if you want to find the net force on...

Question: An electron with a velocity of 3.00x10^6m/s[horizontally] passes through two horizontal parallel plates, as in the attached diagram. The magnitude of the electric field between the plates is 120N/C. The plates are 4.0cm across. Edge effects are negligible. a) Calculate the vertical...

Homework Statement http://img256.imageshack.us/img256/5530/hwimgxd3.gif A particle of mass 0.450 kg is shot from P. The particle has an initial velocity V_0 with a horizontal component of 30.0 m/s. The particle rises to a maximum height of h = 21.0 m above P. Assume that h[SIZE="1"]2 =...

Thanks in advance for reading this thread. Here goes the question; Q: A firefighter climbs up a 10.0m ladder leaning against a vertical wall. The ladder makes an angle of 25.0 degrees with the wall. The firefighter reaches the roof in 15.0s a) What is the height of the wall? 9.10m b)...

Alright, I know how to find the horizontal asymptotes but the vertical asymptotes? I tried dividing the polynomials but maybe I am not doing it correctly because I cannot get a normal answer... and I am unsure how to factor the denominator.

Homework Statement A 315.0 g block is dropped onto a vertical spring with a spring constant k = 262.0 N/m. The block becomes attached to the spring, and the spring compresses 0.12 m before momentarily stopping. While the spring is being compressed, what work is done by the block's weight...

Homework Statement A bucket of mass 1.60 kg is whirled in a vertical circle of radius 1.00 m. At the lowest point of its motion the tension in the rope supporting the bucket is 25.0 N. (a) Find the speed of the bucket. (b) How fast must the bucket move at the top of the circle so that the...

Now I am learning Uniform Circular motion, but I don't know what do horizontal circle and vertical circle mean? I think they must be very different in solving problems. Hope you can tell me, thank you.

In the movie Vertical Limit *spoiler alert* a girl gets her finger crooked and she tells the guy she's a nurse and he has to straighten it. How much time do you have to straighten a crooked finger/whatever before it sets like that and they have to lose the finger or something and also...

First, let us consider an object launched vertically upward with an initial speed v. Neglect air resistance. What is the speed of the object at the height of (1/2)h max? i know that h max = (initial v in the y direction / 2g) and i also know that Kinitial +Uinitial =Kfinal +Ufinal or 0.5(mv^2) =...

Homework Statement A ball is thrown stright up with the speed 25m/s how high does the ball go? Homework Equations S=v*t or V=vot+at I know gravity is a neg acceloration so I should have -9.81 somewhere The Attempt at a Solution I need to find the time first am guessing so, T=s/v...

Does anyone know the symbol for a vertical subset symbol?? i.e the equivalent of \subseteq but which points up (i also need one which points down)?? Thank for the help

[SOLVED] Vertical projectile Homework Statement Is it true that a projectile launched vertically with initial velocity v_0 has total energy E = \frac{1}{2}m{v_0}^2 - G\frac{Mm}{R} where R is the radius of the earth? And to find the maximum height I set the total energy equal to...

Homework Statement A kangaroo jumps to a vertical height of 2.3 m. How long was it in the air before returning to Earth? Homework Equations kinamatics The Attempt at a Solution i got .68 which i think is rite but i don't know what do you get?

Anyone know how long a typical let's say news helicopter can last in the air given how much fuel it holds? I am not sure but I heard a news helicopter or a police helicopter probably won't last more than 3 hours in the air. Some military transport helicopters can only do about 2 and attack...

An object, suspended from a vertical spring, oscillates up and down at 5.87 Hz. How much would this object stretch the spring, if it were hanging at rest?

can anyone help me start this problem? Besides its weight, a 2.8 kg object is subjected to one other constant force. The object starts from rest and in 1.2s experieces a displacement of (4.2i - 3.3j) m, where the direction of j is the upward vertical direction. determine the other force

its asking me to find the value of p so that the function won't have a vertical asymptote: g(x) = (3x + p) / (x^3 + 8) however, I'm not sure how to figure that out...any help?

Hey, Simply I want to figure out what produces the reaction force, in this picture i drew, a reaction force appears directing in the same direction as the weight force, any ideas why? Sorry for the bad drawing The example shows a cyclist going around a loop (upsidedown)

angle of vertical path? Homework Statement A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 31:7 m=s. At the same time, it has a horizontal velocity of 58:6 m=s. the combined velocity is 66.625m/s At what angle with the vertical is its...

Two basketball players are essentially equal in all respects. (They are the same height, they jump with the same initial velocity, etc.) In particular, by jumping they can raise their centers of mass the same vertical distance, H (called their "vertical leap"). The first player, Arabella...

Homework Statement A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 11 m/s at an angle of 65 degrees above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so it's vertical speed...

Homework Statement A bridge rises 321m above the Arkansas river. Suppose you kick a rock horizontally off the bridge. The magnitude of the rock's horizontal displacement is 45.0 m. Fine the speed at which the rock was kicked. Homework Equations Vi=Vx. Dx=45m. Dy=-321m The Attempt at...

Homework Statement A vertical force F is applied to a block of mass m that lies on a floor. what happens to the magnitude of the normal force N on the block from the floor as magnitude F is increased from zero if force F is a)downward b)upward Homework Equations Let m be the mass of...

I am trying to find out how fast a vertical cylindrical water column heats due to the ambient temperature. I already calculated the heat transfer due to conduction but I am now interested in the role of natural convection. So to be clear there is a temperature difference between the walls and...

1. A car of mass 1500kg moving at constant speed of 80km/hr passes over a humpback of a bridge of radius of curvature r. The car remains in contact wit the road as it passes over the top. a) Express N, net force exerted by the car on the road, in terms of r. b) Determine the minimum...

Homework Statement Apologies for so many posts, however this is the last question. A stone his thrown vertically upwards with speed 16m/s from point h meters above the ground. The stone hits the ground 4s later. Find the value of h. The Attempt at a Solution I really haven't a clue on...

Hi, I'm trying to get the rig for my physics project set up which requires some constant water flow through the system. Unfortunately it's requiring a bit more water inflow than the tap can provide. I measured the tap's flow rate to be somewhere around 0.1L/sec to 0.3L/sec Now because I...

Homework Statement One of the fastest recorded pitches in major-league baseball, thrown by Billy Wagner in 2003, was clocked at 101.0 mi/h (Fig. P3.22). If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically (in feet) by the time it reached home plate...

I want to draw the V- and M-diagramme for this beam: http://www.badongo.com/pic/646161 Am I on the right track? I find it difficult to calculate M here. What should I do?

Homework Statement http://img407.imageshack.us/img407/5642/resumestuff004bm5.jpg A 135 N vertical force P is applied to A to the bracket shown, which is held by screws at B and C. (a) Replace P with an equivalent force couple system at B. (b) Find the two horizontal forces at B and C...

Hey, I'm just having some trouble getting started with this problem. ------------- ( ) ( m1 ( ) ( 2m1 Crude representation: (The parantheses are supposed to be the springs) There is a mass (m1) that is attached vertically to a board by a spring of...

If an object is tied to a string in vertical circular motion (yes, I mean vertical as in the string has the force of gravity acting on it), does it actually change speed? I was given a question where the 'average speed' of an object in vertical circular motion was 6.1 m/s, and then they wanted...

Homework Statement Basically i have been given a set of data to analyse. The data was collected by rolling a ball of a ramp. The ramp is set on a table and the edge of the ramp is parralel to the table. The ball then travels through the air until it hits a piece of carbon paper. The vertical...

Homework Statement a list of data is given for a seat on a ferris wheel that is traveling in a circle. the data is time vs its vertical velocity. the question is to estimate the diameter of the ferris wheel. Homework Equations n/a The Attempt at a Solution what i did was...