Name: ________________________________
Sample Problems for Fluids/Pressure
Density and SG
Density is ρ = m/V
1. What is the mass of a solid iron wrecking ball of radius 18 cm? ( V = 4/3 πr3 )
2. What is the approximate mass of air in a living room 4.8 x 3.8 x 2.8 m? (ρ of air is 1.29 kg
/m3).
Pressure and Pascal’s Principle
3. The surface of the water in a storage tank is 30 m above the water faucet in the kitchen of a
house. Calculate the difference in water pressure between the faucet and the surface of the
water in the tank.
4.