13.34 A metal cube, 2.00 cm on each side, has a density of 6600 kg/m'. Find its apparent mass when it is totally submerged in water. Ans. 44.8 g

Hi, can you help by explaining Part D above?

8. Design Problem: A material is needed to support a hanging sculpture with an overall tensile load of 800 N. It is important that the material not undergo any permanent deformation under this load and must have minimum volume/diameter. Using a circular rod, design structural components using your data for each of the three materials. Which material would you choose for the application and why? If the requirement was minimum weight, rather than minimum volume, which material would you use? Show sample calculations.

Which equation will yield a direct solution to problems involving force,velocity and time?

Solid modelling may be used by designers to give their products a three-dimensional appearance and an organic sense of movement rather than just putting lines together. Explain?

Solid modeling is a technique utilised by designers to enhance the three-dimensional and organic appearance of their works beyond what can be achieved through the mere assembly of lines. Explain?

Define the term falling block?

The figure shown below (Fig. 2) is a schematic representation of a scissor jack in two different positions. The maximum load that this mechanism must withstand is 800 kg. 4 are proposed different materials to make the jack arms and spindle. The mechanical properties and some Physical characteristics of each material are shown in Table 1. a) Based on the properties of each material and the cross section of the arms and the screw, Propose what would be the most suitable material for its manufacture. The length of each arm is 150 mm. The stress on the arms and the spindle must not exceed the yield strength of the material selected for neither of the two analysis positions. b) Using the mechanical properties of the material you selected, calculate the change in dimension that the arms and the spindle of the jack were tested for the two analysis positions. The length of the spindle is 280 mm.

4) List the passageway (gating system) elements in sand casting moulds and show them with drawing? Draw the stress-strain curve and gives the stress and strain equations for both Engineering and True stress-strain