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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?
Carbon nanotubes (CNTs) with low weight (density = 1.3 g/ cm^3), high tensile strength (50 GPa), and modulus of elasticity (1 TPa) in the axial direction have been touted as the st
Kinetics: Define Kinetics. What is plane motion? Sol: Kinetics is that branch of mechanics, which deals with force system that produces acceleration and resulting motio
Develop an EES Code for a Rankine cycle with reheat and with 2 open feedwater heaters. The cycle is shown below: Use the following conditions: 1. 700 psi, 850F 2. 500
Q.What is the mean of Off time? It is the interval from the end of the hold time to the beginning of the squeeze time for the next (resistance) welding cycle. In automatic m
What do you mean by synchromesh device ? explain the basic working of a synchromesh gear box.
Motion of this particle: A particle of mass m is resting on a smooth horizontal plane as illustrated in Figure (a). It is associated to a spring which has a constant of k in f
Types of Friction There are basically two types of friction, (a) Dry Friction ( b ) Fluid Friction Dry Friction: Dry friction (also called as coulomb friction man
Railway operation: Terminal facilities are an important feature of railway operation. These include stations where trains stop and passengers are serviced; and railway yards w
Equation of motion of lift: Write equation of motion of lift when move up and when move down Assume, W = Weight carried by lift m = Mass carried by lift = W
Define the nature of shear force and bending moment under load variation. Sol.: The nature of SF and BM variation under two-load region is given in the table below
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