Track Definition and 329 Threads

Homework Statement A roller-coaster has a mass of 500 kg when fully loaded with passengers. The car passes over a hill of radius 15 m. When at the top of the hill, the car has a speed of 8.0 m/s. WHat is the force of the track on the car at the top of the hill? Homework Equations F=ma...

I have a science fair coming up for school, and while I have been doing a ton of research, I have a few questions. I am attempting to recreate an experiment in which a supercondcutor levitates back and forth along a track of permanent magnets. The track consists of 23 magnets, 3 magnets to a...

1. A 50 g ball is released from rest 1.0 m above the bottom of the track. It rolls down a straight 30 degree segment, then back up a parabolic segment whose shape is given by y = 1/4x^2, where x and y are in m. There is a picture shown too, but I can't figure out how to get it in the post...

A particle can slide along a track with elevated ends and a flat central part, as shown in Figure 8-53. The flat part has length L = 40 cm. The curved portions of the track are frictionless, but for the flat part the coefficient of kinetic friction is µk = 0.32. The particle is released from...

Homework Statement a car travels around a track at a speed of 5 rev/s. the track begins with a radius of 35m and spirals such that the radius increases 5m/rev. give the speed and position of the car as functions of time. express your answers as polar vectors. Homework Equations...

Strange thing about the Olympics- Track Runners' "USA" Why do the track runners from the United States have their "USA" in magic marker, while the others are clearly printed? http://www.flickr.com/photos/29601881@N05/2787191037/

Homework Statement Integrate g(x,y,z) = y + Z over the surface area of the wedge in the first octant bounded by the coordinate planes and the planes x = 2 and y + z = 1. Homework Equations see below The Attempt at a Solution see below

A slide wire (resistance R) travels without friction along the track shown below. It starts from position x0 (non-zero) and velocity v0 , to the right as shown. Assume that the v shaped rails meet at an angle of q. Use the coordinate system shown. The magnitude of the external magnetic...

[SOLVED]If fast enough, a car can be driven on a track that is banked vertically. In the view of the 2008 formula one race in Singapore, the government has decided to build one such track. Given that the diameter of the track is 100m, and the coefficient of static friction between the rubber...

I have just done an experiment with a glider on an air track and applied a force to it. Its velocity increased very slightly and was wondering are there any reasons, other than friction, why the velocity could change during motion? Thanks I thought this but i don't know if its right "There...

Homework Statement This question came up recently, and i personally have been weak regarding work and energy, i have only just started to understand Newtons laws sufficiently. There is a scan of the question attached. Could i please have an explanation this question? A 0.5-kg mass is...

I've actually been keeping track of CERN's development (although loosely) for about 4 years. Recently, there's been news of it and its almost finished. This stuff is amazing...can anyone tell me the goals of CERN??

Hello, New here. I have designed a segment of a track that I am building that I need to pull some data out of. It is a high-to-low transition (down hill) that takes the form of cosine over the domain [0,pi]. Thea graph of the transition's profile is y=5.5cos(xpi/18)+5.5 It is 11 inches high...

[SOLVED] Resultant Force for circular motion on a banked track Homework Statement A car travels 77 m/s around a circular track of radius 71.9 mass of car= 2800 kg coefficient of friction = .1 angle of track with horizontal = 22 degrees acceleration of gravity = 9.8 m/s^2 What is the...

How many poker tournaments must I track to obtain a "significant" sample Good afternoon. My question pertains to single table poker tournaments (aka Sit 'N Go's) and I hope some of the bright minds of this forum will find the question at least interesting. The type of Sit 'N Go I play is a...

As someone who's interested in the history/ideas of mathematics I'm attracted towards the pure track but I'm also attracted to the job prospects of applied math. Are my impressions wrong? Can one find employment with either concentration, or is the applied track superior in that regard?

[FONT="Times New Roman"][SIZE="2"]Hey, today while watching the cricket I was fascinated by "Hawkeye" and how it predicted the ball trajectory, from the bowlers hand to a few metres past the batsmen. "Hawk-Eye is a computer system used in cricket, tennis and other sports to track the path of...

there is this great line from a song off the matrix sound track called 'ultrasonic sound' by dj hive. "There are doorways I haven't opened, and windows I've yet to look through. going forward may not be the answer. maybe i should go back". i think its a great line and I'm trying to find where it...

Hi, I've posteed about this rollercoaster already, so some of you may or may not recognize the whole idea but basically I have to construct a miniature rollercoaster for a ball bearing to run through. Now, my question here is much much differnt. I'm not looking for ideas or design tips, but...

A small particle slides along a track with elevated ends and a flat central part. The flat part has a length L = 0.40 m. The curved portions of the track are frictionless, but for the flat part the coefficient of kinetic friction is 0.12. The particle is releases from top of the track, which has...

Homework Statement A 23.0 kg block at rest on a horizontal frictionless air track is connected to the wall via a spring. The equilibrium position of the mass is defined to be at x=0. Somebody pushes the mass to the position x= 0.350 m, then let's go. The mass undergoes simple harmonic motion...

Homework Statement A uniform solid cylinder (m=0.230 kg, of small radius) is at the top of a similar ramp, which has friction. The cylinder starts from rest and rolls down the ramp without sliding and goes around the loop. Find the speed of the cylinder at the top of the loop. Homework...

[SOLVED] Particle movement down a track Homework Statement A particle of mass m = 6.60 kg is released from point A and slides on the frictionless track shown in the figure below. (ha = 5.20 m.) (a) Determine the particle's speed at points B and C. point B____________ m/s point C...

[SOLVED] Circular Motion Homework Statement A 1500 kg car drives around a flat 200-m-diameter circular track at 25 m/s. What is the magnitude and direction of the net force on the car? What causes this force? Homework Equations F_c = \frac{mv^{2}}{r} The Attempt at a Solution So I suppose...

A 1kg ball rolls along a circular track that is banked at 20 degrees. The normal force on the ball is 10.43N, tilted inward. The radius of the track is 10m. a. What is the net force on the ball (include direction)? b. How fast is the ball going for it to complete the turn? possible...

Homework Statement There are two tracks side by side, same height above ground, one ball is placed on one track, and the other one on the other track. A spring is pulled back, and it hits both of the balls with the same force. Both ramps end at the same place. one track looks like this ...

Homework Statement The position of a toy locomotive moving on a straight track along the x-ais is given by the equation x = t^6 - 6t^2 + 9t where x is in meters and t is in seconds. The net force on the locomotive is equal to zero when t is equal to _______? Answer in units of...

Homework Statement A small block of mass m = 1.3 kg slides, without friction, along the loop-the-loop track shown. the block starts from the point P at rest a distance h = 52.0 m above the bottom of the loop of radius R = 18.0 m. A)What is the kinetic energy of the mass at the point A on the...

Homework Statement A small block of mass m = 1.8 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 56.0 m above the bottom of the loop of radius R = 17.0 m. What is the kinetic energy of the mass at the point A on the loop...

Question on Motion of a car round a banked track [SOLVED] Homework Statement A racing car of 1000kg moves round a banked track at a constant speed of 108km/h. Assuming the total reaction at the wheel is normal to the track, and the horizontal radius is 100m, calculate the angle of...

Question: A. A car that weighs 12000.0 N is initially moving at a speed of 57.0 km/hr when the brakes are applied and the car is brought to a stop in 2.6 s. Find the magnitude of the force that stops the car, assuming it is constant. B. What distance does the car move during this time...

Homework Statement car is on a horizontal circular track of 80m radius and car starts from rest to 100km/h in 10 seconds. what's the magnitude a of ttotal acceleration of the car 8 seconds after start? Homework Equations normal acceleration = v^2/r The Attempt at a Solution...

Three High Schools—Washington, Lincoln and Roosevelt— competed in a track meet. Each school entered one man, and one only, in each event. Susan, a student at Lincoln High, sat in the bleachers to cheer her boyfriend, the school's shot-put champion. When Susan returned home later in the day, her...

Can anyone get me on the right track? A solution contains the folllowing ions, each at a 0.1 M concentration. Ag+(aq), Ca2+(aq), Ni2+(aq) write out a procedure by which these ions may be sparated form each other and from the solution, clearly indicating the order of separation and...

Homework Statement th rocket driven sled sonic wind no. 2 used for investigating the physiological effects of large accelerations, runs on a straight, level track 1070m long. Starting from rest. it can reach a speed of 224m/s in 0.900s compute for its acceleration assuming that it is constant...

I have two questions that I want to make sure I'm doing correctly and understanding. The first question is how close will two protons get to each other if they are traveling at a velocity v towards each other. I figured you can set up 1/2mv^2 = kq1q2/r and solve for r..is that correct...

Hi guys, I've just completed my first year at Florida Tech with a 3.78 GPA (and completed Physics 1 and 2, and Chem 1 and 2, as well as up to Calc 3 - all with A's except Chem 1 which was a B. I also took a technical writing course and got an A). I also switched from an Astrophysics major to...

OK, is any timetable for withdrawal "artificial" if it is not dreamed up by Rove and Cheney? Is any timetable "artificial" if it does not fit the needs of the oil companies? Next, Bush is a "Washington politician" who has fired and/or ruined the careers of any senior military officers who...

a roller coster car of mass 1500 kg starts at a distance of H=23m above the bottom of the loop 15 m in diameter. if friction is negligible, what is the downward force of the rails on the can when it is upside down at the top of the loop? so what i was thinking is this: f=ma and in this...

:cry: Alright I need help drawing the diagram... I know what I'm doing and a lot of the information but I need help with the diagram. A three car race track has sensors in each lane at the finish line. As the cars cross the finish line their respective sensors respond and send a signal to a...

Can someone help with this? Thnx A toy train track is mounted on a large wheel that is free to turn with negligible friction about a vertical axis as shown in the figure above. The mass of the wheel plus track is 3.59 kg and the radius is 1.79 m. Ignore the mass of the spokes and hub. A toy...

Two blocks are free to slide along a frictionless wooden track. A block of mass m1=5 kg is released from point A. Protruding from its front end is the north pole of a strong magnet, repelling the north pole of an identical magnet embedded in the back end of the block of mass m2=10 kg, initially...

A bobsled run leads down a hill as sketched in the figure above. Between points A and D, friction is negligible. Between points D and E at the end of the run, the coefficient of kinetic friction is µk = 0.4. The mass of the bobsled with drivers is 210 kg and it starts from rest at point A. I...

I'm about to start my third year of an MPhys degree at Oxford. I'm a very serious student and am predicted to get a good first, but I've recently become more interested in becoming a doctor (and possibly doing medical research) than just pursuing a purely scientific career in physics. I'm...

A train is moving west at 50 km/hr. In relationship to the tracks, the top point of the trains wheel is also moving east. However, the bottom point of the wheel is moving west. Assuming the wheel rotates at a constant speed, does the train really move at all?

I know that as inexperienced as I am with this subject as well as higher math, I shouldn't be challenging those that are more experienced than me. However, just going by instinct, doesn't anyone else feel like I do that all of this multi-dimensional stuff, strings, p-branes, supersymmetry...

http://img47.imageshack.us/img47/4519/geo23mo.jpg It's an equliteral triangle I'm suppose to find the area of the shaded region. first of all are the chords of each those regions half 5cm? Should I find the areas of the sectors and then subtract the areas of the triangles? Please...

Hey. Heres the question i was given: I am studying year 11 physics, and this is one of the harder questions I've had to face so far. I am going to explain my theory of what's happening as i go along. If Any of my theory is incorrect, PLEASE correct me on it. I am not only doing this to get...

How do you display a trace bar which shows how much of the swf has loaded ? Thank you

A 0.50 kg glider on an air track is pulled along frictionlessly by a tensile force arising from a hanging 19.0 N weight. Over what distance will it travel in order that 14.0 J of work be done on it? I've been set this question by one of my Physics teachers and it's got me a little...