A thin rim1.6 m external diameter is 160 mm wide and 12 mm thick. It is made in two halves with the joint parallel to the axis, and fastened together by three bolts on each side of each joint. If the maximum allowable shear stress in the bolts is 16 MPa. Determine for a speed of 500 rev/min : a) The centrifugal stress in the rim . assume  = 7.8 Mg/m3 b) a suitable diameter for the bolts, if they are in single shear

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.