Q1. A diver is submerged 5.00 m below the surface of a freshwater [densitv 2 999 kgfmgl lake. Draw a free body diagram of the diver in the water and calculate the absolute pressure where the diver is. Atmospheric pressure should be taken as 101,000 Pa. Q2. Pressure is applied from a gas cylinder to one side of a U-tub-e manometer with constant internal diameter "D", as shown below. The manometer is filled with fresh water (density.f = 999 kgfm3) and upon application of the pressure, the water column on one side rises bv 4.00 cm relative to the other. Draw and label a free-body diagram representing the forces in the manometer. Calculate the pressure above atmospheric pressure applied by the gas. Pressure Week 1|] topic - Buoyang and fluids in motion 13. A platform of volume 1.00 x 105 m3 and densityr 92? kg/m3 floats in seawater (density = 1024 kg/msi. Draw and label a free bodv diagram representing the platform in the seawater. Calculate the volume of the platform that is above the water-line {i.e. not Submerged}. Q4. A racing car is designed to produce down-force as it moves. Air is directed beneath the chassis and between the wheels as shown in the simplified diagram below. The cross-sectional area at the very front of the car is Ag = 00330 mi and at the centre, it is A1 = 0.0310 ml. The car moves forward at 30.0 mfs. Draw and label a free body diagram that includes the weight of the car, down-force and normal force. Calculate the difference in pressure between the air under the middle of the car (with cross-sectional area A1) and atmosphere. State whether the pressure under the car is higher or lower than atmospheric pressure. You can treat the air flow under the car as laminar and as though it occurs through a closed pipe that decreases in cross-sectional area. Density of air = 1.21 kglm3 Area A; v