The temperature and pressure at the surface of Mars during a Martian spring day were determined to be -58 °C and 921 Pa, respectively. (a) Determine the density of the Martian atmosphere for these conditions if the gas constant for the Martian atmosphere is assumed to be equivalent to that of carbon dioxide. (b) Compare the answer from part (a) with the density of the earth's atmosphere during a spring day when the temperature is 18 °C and the pressure 101.6 kPa (abs).

Specify the location of the single resultant load that can be used to replac A: 400 N/m www....mm 3m -3m- B

1-8 For each of the given sections in fig.14-23, determine the following values about the horizontal axis XX, and the vertical axis YY, through the centroid of the section: (a) the second moment of area, (b) the radius of gyration, and (c) the least section modulus for each axis. All dimensions in centimetres 113 041 03 (v) 05 051 9 0-75 05 6 (iv) 10-75

The pipe shown in figure has a mass of 800kg. Determine the forces acting on the pipe. Assume the surface to be smooth. 30% 40-1 1800)