Four balls of equal radii form a pyramid supported by a smooth horizontal plane surface. The three lower balls are held together by an encircling string as shown. Determine the tensile force S in this string if the weight of each ball is 1800 N and the surfaces of the balls are perfectly smooth. Neglect any initial tension that may be in the string before the top ball is placed upon the other three. S S

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A: Detailed explanation and solution of the above problem uploaded in below pictures.

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Q: Q.5 ) Determine the reactions in C on member BCD as shown in figure? 6 m 4 m D 2 m 300 kN

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Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.