Strength of Materials Mock Test 2

1. Where will be the centre of gravity of the T section shown in the figure?

2. Where the center of gravity of a circle lies?

3. A bar of cross-section A and length L is subjected to an axial load W. the strain energy stored in the bar would be __________

4. What will be the amount of axial pull be applied on a a 4cm diameter bar to get an instantaneous stress value of 143 N/mm²?

5. A bar is in two sections having equal lengths. The area of cross section of 1^st is double that of 2^nd. if the bar carries an axial load of P, then what will be the ratio of elongation in section 2nd to section 1st ?

6. A member ABCD is subjected to points load P₁=45kN, P₂, P₃=450kN and P₄=130kN. what will be the value of P necessary for equilibrium?

7. A tensile load of 100kN is gradually applied to a rectangular bar of dimension 2cmx4cm. What will be the stress in bar?

8. A bar having two sections of cross sectional area of 100mm² and 200mm² respectively. The length of both the sections is 200mm. What will be the total strain in the bar if it is subjected to axial force of 100kN and E = 105 N/mm²?

9. If a bar of two different length are in a line and P load is acting axially on them then what will be the change in length of the bar if the radius of both different lengths is same?

10. Where will be the center of gravity of the L-section shown in the figure?