A uniform wire of length 1m and radius 1mm is twisted by an angle 30degree. Find the shear strain (in degree) produced in it.
Here, L = 1 m r = 1 mm = 0.001 m α = 300 shear strain (θ) = ΔLL = r αL =0.001 X 3001 =0.030
The upper end of a wire of radius 4 mm and length 100 cm is clamped and its other end is twisted through an angle of 30o. Then angle of shear is