Q1 : A rod made of carbon reinforced epoxy has a diameter 2.5 cm, length 1.25 m, and mass 0.95 kg. The carbon fibers have a modulus of elasticity 340 GPa and a density 1.91 g/cm'. The epoxy matrix has modulus of elasticity 4 GPa and a density 1.16 g/cm'. Assume there are no voids in the rod. What is the volume fraction of (a) the carbon fibers and (b) the epoxy matrix in the rod? Also, what is the predicted value for the modulus of elasticity in the (c) longitudinal direction and (d) direction perpendicular to the carbon fibers?

If Eg = 2.2 GPa is the bulk modulus of elasticity for water, what pressure is required to reduce a volume by 0.6 percent?

A block weighing 2 KN is being dragged along a rough horizontal plane by a force P= 500N. The line of the force P makes an angle of 12 degrees above the horizontal plane. Coefficient of friction is 0.10. A. Compute the velocity of the block when it has travelled a distance of 5 m from rest. B. Compute the acceleration of the block C. Compute the velocity of the block 2 second after it moves from rest.

A) A circular rod with a gage length of 3.6 m and a diameter of 2.3 cm is subjected to an axial load of 51 kN . If the modulus of elasticity is 200 GPa , what is the change in length? B)A circular rod with a length of 4 m and a diameter of 2.4 cm is subjected to an axial load of 61 kN . If the resulting change in length is 3.34 mm , what is the modulus of elasticity? C)A circular rod with a length of 3.7 m and a diameter of 2.7 cm is subjected to an axial load and increases in length by 3.26 mm . The initial portion of the stress-strain curve of the material is given. What is the applied load?