(a) Four forces acting at a point as follows: 1. $20\text{ N}$ toward…

Previous year question for Structural Analysis-I.

Question

(a) Four forces acting at a point as follows:

1. $20\text{ N}$ towards east

2. $30\text{ N}$ towards north

3. $30\text{ N}$ towards north west

4. $15\text{ N}$ towards south.

Find the magnitude and direction of resultant of force.

(b) A and B are two fixed points in a horizontal line at a distance p apart. Two fine line strings AC and BC of length q and r support a mass at C, show that the tension in the strings are in the ratio. $q(r^2 + p^2 - q^2) : r(q^2 + p^2 - r^2)$

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