2. Consider the motion of a continuum, given by the following relationships between the spatial coordinates (x1, X2, X3) and the material coordinates (Xı, X2, X3). X; = X,, x, = kX;t² +X, X; = X3 a) Find the velocity v and acceleration a of the material points in a materials description. b) Find the spatial velocity field.

40N 200 mm B 300 mm 20N 300mm A 45°

The answer is one of the options below please solve carefully and circle the correct option Please write clear .

2) Which of the following pairs are NOT correctly matched? O Macro stresses - Large scale and may be developed by inhomogeneous plastic deformation Macro stresses - From external loading, by non-uniform heating O Micro-stresses - Local small-scale internal stresses which arise due to arise due to heterogeneities i.e. due to differences in elastic modulus, co-efficient of expansion O Micro-stresses - Arise due to heterogeneities i.e. due to differences in elastic modulus, co-efficient of expansion

50 mm 150 mm 50 mm 85 mm Section X-X 20 kN

300 mm 300 mm Figure Q2

What type of section is represented by section A-A

What is the worst-case distance between the bottom surface of the slot and the bottom surface of the part in the drawing below? B 4.000-4.020 O 1.475 O 1.450 O 2.950 O 1.500 O 1.030 4.00 0.010MABM 1.000-1.010 2.00 A

20

name these lines