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In an investigation of whiplash resulting from rearend collision, sudden rotation of the head is modeled by using a homogeneous solid sphere of mass m and radius r pivoted about a tangent axis (at the neck) to represent the head. If the axis at O is given a constant acceleration a with the head initially at rest, determine expressions for the initial angular acceleration of the head and its angular velocity ? as a function of the angle ? of rotation. Assume that the neck is relaxed so that no moment is applied to the head at O.
1. (a) Assume for the solidification of nickel (Problem 10.4) that nucleation is homogeneous, and the number of stable nuclei is 106 nuclei per cubic meter. Calculate the critical radius and the number of stable nuclei that exist at the followi..
an incompressible newtonian fluid flows steadily between two infinitely long concentric cylinders of radius ri and ro
a cylindrical specimen of a titanium alloy having an elastic modulus of 107 gpa 15.5 times 106 psi and an original
a particular manufacturer of charcoal briquettes is contracted to create a product that contains no more than 0.1 mass
in a tensile test for an alloy used for ballistic-missile launch tubes on boomer submarines the yield strength was
Determine the acceleration of the initially stationary 20-kg body when the 50-N force P is applied as shown. The small wheels at B are ideal, and the feet at A are small.
Find the concentration of Fe (II) in the sample.
it is highly desirable to make benzene from ethane from shale gas in a continious vapor-phase reaction3c2h6 --gt c6h6
a pipe system carried a steam-water mixture at 250psi 95 quality. a leak develops in the pipe allowing fluid to escape
This is the question I need to be answered-First of all an introduction about Nuclear Power
the wheel consists of a 4-kg rim of 250-mm radius with hub and spokes of negligible mass. the wheel is mounted on the
A fluid with a specific volume of 0.2m3 /Kg at 500KPa pressure enters a system with 8 m/s velocity. Heat losses in the system are found out to be 50 KJ/Kg of fluid supplied. The leaving pressure of the fluid is 100Kpa with a specific volume of 0.1m3 ..
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