A close-coiled helical spring has 100 mm mean diameter and is mada of 20 turns to 10 mm diameter steel wire. The spring carries an axial load of 100 N Modulus of rigidity is 84 GPa. The shearing stress developed in the spring in N/mm^{2} is

Consider the following statements pertaining to plane table survey : 1. Two-point problem is solved by mechanical method. 2. Three-point problem is solved by Bessel's method. 3. In two point problem, auxiliary station is required. Of these statements :

If a member is subjected to tensile stress of p_{x}, compressive stress of p_{y} and tensile stress of p_{z} along the x, y and z directions respectively, then the resultant strain 'e_{x}' along the 'x' direction would be (E is Young's modulus of elasticity, μ is Poisson's ratio)

A cantilever is subjected to a uniformly distributed load W over its whole length 'L' and a concentrated upward force W at its free end. The deflection of the free end is