1.A person on the moon wishes to determine the mass of a rock. He has a spring scale calibrated to read pounds mass at a location where the acceleration of gravity is 32.186 ft/s 2 . The rock gives a reading of 18.76 on this scale. The acceleration of gravity on the moon is 5.32 ft/s 2 . What is the weight of the rock on the moon?
2.A two thousand gallon tank has two influent streams. Influent one has a flow of 20 GPH and a salt concentration of 100 mM; influent two has a glow of 15 GPH and a salt concentration of 200 mM. What is the steady-state concentration of salt in the tank. Assume volumetric steady-state and that the system is well mixed.
3.Determine A_x and A_y, joint A's reaction forces' magnitudes in the x and y directions, respectively, and C_y, joint C's reaction force's magnitude in the y direction.