**Q2: **

The major and minor radii of a thin elliptical disk of uniform density are 2.00 m and 1.00 m, respectively. The disk has a mass of 1.00 kg. Determine the moment of inertia about an axis that is perpendicular with the disk’s surface and intersects the center of the disk.

**Q3: **

How do shear stresses and normal stresses differ?

- AShear stresses are the absolute stresses, whereas normal stresses have been divided by the total stress.
- BThey have different units.
- CNormal stresses act at the surfaces of materials, whereas shear stresses act within materials.
- DShear stresses act to slide parallel planes of material apart without changing separation, whereas normal stresses act to increase or decrease the separation between parallel planes of material.
- ENormal stresses act within materials, whereas shear stresses act at the surfaces of materials.

**Q4: **

What is the dimension of mass moment of inertia?

- A
- B
- C
- D
- E

**Q5: **

A solid sphere of radius 10 cm is allowed to rotate freely about an axis. The sphere is given a sharp blow so that its center of mass starts from the position shown in the following figure with speed 15 cm/s. What is the maximum angle that the diameter makes with the vertical?

- A
- B
- C
- D
- E

**Q6: **

Which of the following formulas correctly expresses the relationship between the mass moment of inertia and the radius of gyration for an object of mass ?

- A
- B
- C
- D
- E

**Q7: **

A rod and a sphere are combined to form a system. The rod’s length is 0.50 m and its mass is 2.0 kg. The sphere’s radius is 20.0 cm and its mass is 1.0 kg. The system can rotate either about the point , at the opposite end of the rod to the sphere, or about the point , where the rod and the sphere connect, as shown in the diagram.