Diagram below shows a 5 m laddar of mass 12 kg leaning against a wall of height 4m. Assuming the wall surface is smooth and ground is rough, calculate the force on the ladder by the wall and ground.

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.