In a crank and slotted lever quick return motion mechanism, the distance between the fixed centre is 2XY mm and the length of the driving crank is 1XY mm. Find the inclination of the slotted bar with the vertical in the extreme position and the tìme ratio of cutting stroke to the return stroke . If the length of the slotted bar is 4XY mm find the length of the stroke. If the line of the stroke passes through the extreme position of the free end of the lever.

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Center of Gravity and Centroid

The term center of gravity indicates the position or location of a point about which the whole weight of a body or system is supposed to be concentrated, which means the whole weight of the body or system works through this point. It is closely related to mass distribution. For all positions of the body, the center of gravity would be a single point.