a. Liquid of density fills a cylinder of base area A and height h. i. Using

a. Liquid of density ρ fills a cylinder of base area A and height h.
i. Using the symbols provided, state the mass of liquid in the container.
ii. Using your answer to i, derive a formula for the pressure exerted on the base of the cylinder.
b. A boy stands on a platform of area 0.050 m² and a manometer measures the pressure created in a flexible plastic container by the weight W of the boy, as shown.

The density of water is 1,000 kg m⁻³. Determine:
i. The pressure difference between the inside of the plastic container and the atmosphere outside
ii. The weight W of the boy.

Transcribed Image Text:

90 80 manometer platform area 0.050 m2 70 weight W 60 metre rule 50 showing distances in flexible, 40 plastic container 30 cm 20 10 water Figure 7.24