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The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. Some of these studies use a machine known as a centrifuge. This machine consists of a long arm, to one end of which is attached a chamber in which the astronaut sits. The other end of the arm is connected to an axis about which the arm and chamber can be rotated. The astronaut moves on a circular path, much like a model airplane flying in a circle on a guideline. The chamber is located 15 m from the center of the circle. At what speed must the chamber move so that an astronaut is subjected to 8.9 times the acceleration due to gravity?
what is equivalent evaporation
Determine tension in horizontal rope: Q: A 500N cylinder, 1 m in diameter is loaded between cross pieces AE and BD that make an angle of 60º with each other and are pinn
Before installing a bolt, stud or nut, threads shall be examined to ensure that there are no incompletely cut threads in the engagement zone (both internal and external) or burns,
Q. Describe facing material? Facing Materials: These materials when added to the moulding sand tend to obtain smoother and cleaner surfaces of castings, help easy peel
Q. Show the tensile properties of material? Tensile properties indicate how the material will react to forces being applied in tension. A tensile test is a fundamental mechanic
(a) What is cushioning effect of a tyre? (b) What are the desired properties of a wheel?
Working of boiler : Water is filled in boiler shell through the feed valve up to 2/3 rd of shell. Water flows down through the down take header by means of descending wa
what is weldability?
(a) Reduce expression for the net pressure and depth of centre of pressure in case of an inclined plan surface submerged in a fluid. (b) Derive Euler's equation of motion along
Explain the uses of Residual soils Residual soils may be underlain by sloping rock which may contain weathered seams. The possibility of foundations sliding on these seams have
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