I understand why positive g's damage the wing, or rest of the plane, but why is there a limit for going into negative g's? doesn't a negative g put less weight to no weight on the planeIs it because a negative g is putting force on the wings in the opposite direction? towards the ground?
You are kidding right? No, welders do not make anything near what a doctor makesThe job involves manual laborIt is hot, dirty, etcMost factories use robots now.
You can't make a living doing ONLY weldingYou have to have other skills tooMy husband has been a union ironworker and certified welder for 30 yearsHe spends about ten percent of his time welding.
There are lots of different kinds of welders, some work underwater, some high up in building construction, some on carsMy husband learned to weld as part of his training in metal sculpture and could weld a boat hitch, when it needed fixing, tooAnother welder we know does both welding and sculpture depending on what kind of work is availableYou can't pick a career by the payBesides, lots of doctors, optometrists, pharmacists now work in clinics owned by large corporations and they are salaried while the doctor you know has his own practice and can see more people, work longer hours, specialize to earn moreThe cost of living for an area will have an affect on how well you liveHow much you earn depends on training, the kinds of work where you live, and the economics of the region Go to the Bureau of Labor Statistics and look up both fields and you can make a comparisonA welder can learn his craft within a short time, depending on how easy it is to manage the materials and can learn other types of welding which might take years to perfectA doctor will have 4 years of college, medical school, internship, residency (for specialties), etc Do you want to touch sick people? Put things together? Completely different skills in most areas.
negative G is just the SAME FORCE (or acceleration for this purpose) acting opposite way-2 is same total as +2 certain structures are designed to withstand larger force in one direction - imagine lift crane construction, that is triangular in crossectionif you pulled the wrong way, the structure would collapse, just because your force may not be passing exactly through the lonely upper beam, (producing torque and leading to a collapse) the aircraft construction INEVITABLY acts as NONRIGID onehence the difference in the positive/negative G envelope you can imagine it different way - one desk nailed to a supportif you push, the desk acts against the support and nothing happensif you PULL, you may pull the nail with the desk out of support.
