Track Definition and 329 Threads

A small solid marble of mass m and radius r will roll without slipping along A loop-the-loop track, if it was released from rest somewhere on the straight section of track from what initial height h above the bottom of the track must the marble be released so that it is on the verge of leaving...

Two masses m1=100g and m2=200g slide freely in a horizontal frictionless track and are connected by a spring whose force constant is k=.5N/m. FInd the frequency of oscillatory motion for this system. I don't really know how to go about this problem. I'm assuming that the equation to find...

Max spped for a car to go around a curve track without skidding...confusing! here's my question, a car of mass 1000kg moves along the corner of a level road having a radius of curvature 35.0m. If the frictional force between the tyres and the road is 4kN, the maximum speed of the car without...

I've been trying to track down one of the popular physics books, a title I read years ago and can't recall. The author referred to a hypothetical astronaut, traveling at or close to lightspeed. Looking out of his ship's rear window he observes the stars behind him gradually reddening and dimming...

looks like a fun problem, just got to understand it: A 500g block slides down a radial track with height of 1.0 m, it's radius is 1.0 m, with velocity of 4 m/s at the end of the track. what is the loss of the TME? Disipation of energy problem: TMEf - TMEo F * D = K.E.f + P.E.f - (K.E.o...

A 2.12 kg mass on a frictionless horizontal track is attached to the end of a horizontal spring whose force constant is 4.83 N/m. The mass is displaced 3.12 m to the right from its equilibrium position and then released, which initiates simple harmonic motion. What is the force (including...

I'm getting back into the whole fitness thing, so I need to know how I should track my progress. Weight, reps, and sets are a good start, and each of them can be directly graphed against the date. One problem is that graphing all of them together might give a false impression of how well...

A solid marble of mass m=35 and radius r=7 cm will roll without slipping along the loop-the-loop track if it is released from rest somewhere on the straight section of the track. From what minimum height h above the bottom of the track must the marble be released to ensure that it doesn't leave...

does anyone of you know a way to track phone numbers?

Any help will be aprreciated... 1. A car traveling on a flat circular track accelerates uniformly from rest with a tangential acceleration of 1.70 m/s2. The car makes it one quarter of the way around the circle before skidding off the track. Determine the coefficient of static friction...

A car in a roller coaster moves along a track that consists of a sequence of ups and downs. Let the x-axis be parallel to the ground and the positive y-axis point upward. In the time interval from t=0 to t=4 s, the trajectory of the car along a certain section of the track is given by (look...

y can't i see currecntly active users ? tnx

An object moves clockwise with decreasing speed around an oval track. THe velocity vectors are in the top right side of the oval labeled G and H respectively. They lie fairly close to one another. I have a few questions: IF point H were chosen to lie closer to point G, describe how the change...

Im Having problems with 2D- curved track velocities. The question is...Find an Equation to find the velocity final of a car with mass - m going down a curved track with a coefficient of Friction - Uk The track is height - h above the ground and has an initial Velocity of Vi...so basically...

I am having some problems with equations for a problem. The problem isn't really a question, it's more of finding equations to make something work. Basically, It is a graph on Microsoft Excel, that resembles a 2D track. The track has variable points that you can change, to increase height...

A jogger runs around a 2 km circular track as shown below. Using graph paper, draw a displacement - time graph of the continuous North vector which runs from the start axis to the jogger's current position. Identify the shape of your graph. Draw a corresponding distance - time graph for the...

No one in my class got any farther than I did on the track problem, and i am afraid when Ehild gave me some help it went just a bit over my head in terms of how to set up the differential equation that i am going to be differentiating... i am going to attach the problem again, because my...

Ok here is the track problem again except this time drawn out with some of my work... this is using Newtons second law... i used microsoft word to draw the track and spring so its a little ruff but you get the idea... still could use some help no matter which way i do it i end up getting one...

I used to run track and had a teammate that ran virtually identical times to me in everything we did. He was a bigger guy (5'11" 180lbs. vs. 5'8" 145lbs.) and much stronger than me in the weight room. I've always been curious about something and am not sure how the physics behind it works...

[SOLVED] Cars Versus Horse on Dirt Track Ok, A little off topic, but something my co-workers and I have been arguing about. They believe if i were to race against horses on an equestrian track in my 240 horsepower 3000lb car, the horses would beat me. With their very un-educated...

Step 0) 22 + 42 + 62+...+(2n)2 = 2n(n+1)(2n+1)/3 Step 1) Let n = 2 22 + 42 = 4 + 16 = 20 2(2)(2+1)(2(2)+1)/3 = 60/3 = 20 Step2) Assume that the formula works for n=1,2,3,...,k ie. 22 + 42 + 62+...+(2n)2 = 2k(k+1)(2k+1)/3 Step 3) 2n(n+1)(2n+1)/3 + (k+1)2 ?

1.Given the joint probability distribution of Y1 and Y2: f(y1,y2)= (2/5)*(2y1+3y2), 0 0, elsewhere find a) f(y1) and f(y2) the marginal distributions b) Given: E(y1y2) = 1/3 E(y1)=17/30, E(y2)=3/5 then Cov(y1,y2)=? c) If E(y1^2) = 7/18 and E(y2^2) = 4/9 and E(y1)=17/30...

Hi, I just needed help starting off this problem: "A 1-km racetrack is to be built with two straight sides and semicricles at the ends. Find the dimensions of the track that encloses the maximum area." There was a similar question which I did before this which involved a Norman...

Proof for that Einsteins singularity theory was wrong: If the universe from the beginning was a singularity, it did not only spread over space instantly, but also kept the same temperature doing this, cause it's said we might observe big bang one day, and thereby it happened there at the same...

Years ago I read in the daily paper(!) an account of a new theorem in partition theory. The key was that the guy had had the idea of proving theorems that were not for all cases but for all but a finite number of cases. The theorem had something about the number of ways to partion (prime?)...

A car traveling on a flat circular track accelerates uniformly from rest with a tangential acceleration of 1.7m/s^2. The car makes it one quarter of a way around the circle before it skids off the track, Determine the coeficient of static friction between the car and track? I really have no...

A small solid marble of mass m and radius r will roll without slipping along the loop-the-loop track shown in Fig. 12-34 if it is released from rest somewhere on the straight section of track. For the following answers use m for the mass, r for the radius of the marble, R for the radius of the...

which soundtracks do you like? i like the sound track of pirates of the caribbean. the composer of the soundtrack is klaus badelt. great music...

OK, so the man or woman you're falling in love with tells you to play just one track that you love, a piece of music that says a lot about you, who you are, who you want to be. You're also aware you want to put yourself across in a good light, so although you might love Kalahari Nose Flute Music...