Clunking noise and hard shifting in 2000 Pontiac Grand Prix 3.8?
So after going to two different Transmission garages to have the mechanics test drive and thoroughly look around as to what was making a hard clunking noise. Both garages said the same thing "the motor mounts and transmission mount need replaced". Okay so instead of paying $$$ for them to do it. I bought the parts and did it myself. 2000 Grand Prix 3.8 (not S/C) 152,201 After replacing the top mounts which are the motor mount connected just above the radiator. Also the torque to strut mounts as well. Then replacing the transmission mount I'd hope the clunking noise be GONE and the bouncing noise from the transmission be gone too. NOPE! Drove the car around for about 45 mins trying to avoid pot holes and going over speed bumps. The bouncing sound is gone which I am happy about. However, when I shift from park to Reverse it still shifts hard, plus when at a stop then I take off again i can almost hear the engine shifting. The fluid level is fine too. I had a passenger in the car at the time and we both agreed there seems to be a bit of vibration under us. Besides how much damn money I have spent to keep this running which is A LOT!! which is more than its worth anymore. I am not going into detail how many freaken repairs i've done and a professional has done. I am not sure what else the clunking noise can be coming from. A person can actually see the whole engine move back and forth when shifting gears.Is that common? The parts did come from a auto parts store not a salvage yard. Are Pontiac's known for hard shifting and bad transmissions and coolant issues too. I am about to put and end to this and stop spending so much money on this because its put me into some credit card debt. Hell a new car be worth it anymore.
Is ATC(Air Traffic Controller) exam conducted by AAI really tough for a B.Tech guy? What is the syllabus?
I am a B.Tech in Information Technology(2010-14 batch) and have taken the JE ATC exam twice.First Attempt: Candidates had to mark the right choices on OMR sheets. Basic physics and mathematics of class 11th,12th were asked majorly. There were some BSc level Physics questions(10-20%) and some maths(50-60%). There was english and general aptitude too. Even though I didn't know a single thing on BSc Physics and Mathematics, I had a bit of hope. Got 68 marks. Cut-off I heard was 70 or 72(general category).One thing I didn't understand was that why they did restrict the BE/BTech qualification degrees to ECE, ETE and IT only when there were no relevant questions to these fields !Nevertheless, I went in for the second attempt, this time revising my 11th, 12th physics thoroughly.Second Attempt: This was held on 26th December 2015. As opposed to the previous exam, this exam was held online. The paper flabbergasted me to the core. In paper 1, not even a single question was there from 11th-12th class physics. All physics and mathematics questions were from BSc syllabus. I felt like shouting, crying and leaving the exam hall altogether. Since there was no negative marking, randomly marked the choices. Second paper was aptitude based, and being an engineer, easily gulped it down.After the exam, knew JE ATC was another void dream. Early 2016, another advertisement for the post of JE ATC was put up. this time they allowed all branch BTech students( yeah why not, they know none of them will fair !). Fee for general candidates increased form 500 to 1000 INR(marvellous!)My Advice: To all the BTech graduates, DONOT, I repeat DONOT fill the ATC form for Junior Executive. Trust me, it's a trap. I am not demotivating you at all. This is the ground reality. It's high time you realize it. If you are having a dream of making it to ATC(just like I had), it's better to wake up now than in the exam hall.If you want to work as JE, better appear for the post in respective departments(JE ECE/Civil/Mechanical/IT). At least the process isn't unfair plus if your technical knowledge is strong, there's no stopping you.Guys, I was preparing for GATE when attempted for the second time i.e., on 26th December. I left my GATE preparation for sometime and started preparing physics. Don't repeat my mistake, it's all that I want.
How are G-forces calculated?
The term “g-force” is a bit of a misnomer. The symbol g is usually used to mean the acceleration of gravity at the earth’s surface, which is about 9.8 meters per second per second. What people mean by “g-force” is actually simply the force you feel producing the net acceleration experienced by you or some object, including the acceleration of gravity.So if you are accelerating to the left with 9.8 m/s^2 while in a vehicle near the earth, the total “g-force” you feel is about 13.9 m/s^2, up and to the left; the vehicle must push up on you to counteract gravity, and the vehicle must push you to the left to accelerate you in that dimension, and they add like vectors.Another example might be that you are in an elevator, and it is going downward but decelerating at 9.8 m/s^2. In that case you’d say the net g-force on you is “2 gees” upward. (Don’t forget gravity!)Thus the way to measure g-force is to use an accelerometer, which is basically a mass on a spring, even if it’s a tiny one like those inside your smart phone. If the mass on the spring has no deviation from equilibrium then there is no acceleration. An accelerometer can only measure one dimension at a time, typically.
Physics concept explain HELPPPP!!!?
Kiki: I'm not a physicist all I can do address a couple of, what I consider, practical reasons to answer your first question. First: It seems to me like the steeper the fall, the faster the coach will accelerate. It would put less weight on the track, wheels and bearings thereby reducing the drag and allowing the coach to achieve a higher velocity and hence a greater energy to expend on the rest of the course. Second: Because it reduces drag and allows for greater acceleration it doesn't have to be as high. This would reduce some of the structural requirements of a higher initial starting elevation. Third: Since the fall approaches vertical the footprint of the energy making portion of the course can be smaller allowing for more course to be contained in the same amount of space. The second question just sounds like the designer has built in a deceleration feature. Stopping, especially abruptly, can be hard on the body. The back and buttocks available to support high positive "G" forces are lacking in the simple shoulder restraints designed to contain a person on negative "G" maneuvers. While I was in the aviation industry I noted nearly all aircraft are designed to withstand more positive "Gs" than negative. OK there are my thoughts. For what ever you consider their worth, they are yours.