Unless otherwise stated, take the density of water to be P. = 1000 kg/m' and its specific weight to be Y. = 62.4 lb/ft'. Also, assume all pressures are gage pressures unless stated otherwise. 2-125. The container of water has a mass of 20 kg. Block B has a density of 7840 kg/m² and a mass of 30 kg. Determine the total compression or elongation of each spring when the block is fully submerged in the water. kc = 5 kN/m B D. kp =2 kN/m

2””↑ 2" The tabletop experiment shown below has been designed to demonstrate the reaction of a free surface to acceleration. If the weight provides a constant acceleration of 20.1 ft/s2, draw the free surface during acceleration, labeling the water height at each end of the car and the angle o made by the free surface with respect to the horizontal. Car At Rest 6" 4" Car With Constant Acceleration

Questions b-d

2) The form is used to cast a concrete wall having a width of 5 m. determine the equivalent resultant force the wet concrete exerts on the form AB if the pressure distribution due to the concrete can be approximated as shown. Specify the location of the resultant force, measured from point B. p = (422) kPa- 8 kPa B 4 m