3.4 The Crosby gage tester shown in the figure is used to cali- brate or to test pressure gages. When the weights and the piston together weigh 140 N, the gage being tested indicates 200 kPa. If the piston diameter is 30 mm, what percentage of error exists in the gage? Weights Piston - - Air Oil

2. Jasper sucking hard on a thin tube can reduce the pressure in it to 90 % of atmospheric pressure. How high can water rise up in the tube?

7. Find the hydrostatic force on one side of the submerged plate shown below. Force Recall that Pressure pgd, the gravitational constant is g 9.81 m/s² and that the density of water Area is 1000 kg/m³. Again, you do not need to simplify your numerical answer. 5 m 4 m

1. calculate the pressure exerted by pin .if the force by the pin is 100 N and area of contact is 0.01 mm² 2. Calculate the pressure exerted by a block (weight 80 N) on a bench if the area it's pressing on is 2 square metres. 3. Calculate the pressure exerted by a block (m=6 kg) on a bench if the area it's pressing on is 2 square metres.