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The spring controlled governor of the Hartung type has two rotating masses each of 2.5kg and the limits of their radius of rotation are 100 mm and 125 mm. The each mass is directly controlled by a spring attached to it and to the inner governor.
The stiffness of the spring is 8 KN/m and the force on the spring, when their masses are in their mid-position, is 320N. In addition, there is an equivalent constant inward radial force of 80N acting on each revolving mass in order to allow for the dead weight of mechanism.
Neglecting friction, find the range of speed of the gonernor.
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Members AB and BC of the truss shown are made of the same alloy. It is known that a 20-mm-square bar of the same alloy was tested to failure and that an ultimate load of 120 kN was recorded. If a factor of safety of 3.2 is to be achieved for both ..
What is the moment of inertia with respect to the centroidal axis parallel to the base - what is the moment of inertia of a circular area with respect to the x and y axes through the centroid?
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