PHYS 101 Lecture Notes - Lecture 10: Burrard Inlet
15 May 2018
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Phys 101: Tutorial 10. Fluid flow
Instructions: Print and bring with you to your tutorial. Read it over, but do NOT work on until your
tutorial time. Bring a calculator.
Question 1: Why don’t ships sink?
Why do you think those big oil tankers in Burrard inlet that are made out of steel float? A chunk of steel
would normally sink in water because its density is much greater than the density of water.
Bernoulli’s equation:
Question 2:
Get someone in your group to hold two pieces of paper parallel to each other, about 5 cm apart. If they
blow air between them what happens? Can you think of an explanation using Bernoulli?
Document Summary
Instructions: print and bring with you to your tutorial. Read it over, but do not work on until your tutorial time. A chunk of steel would normally sink in water because its density is much greater than the density of water. Get someone in your group to hold two pieces of paper parallel to each other, about 5 cm apart. Using bernoulli"s equation, explain the advantage of animals like rabbits and gophers constructing homes as shown in the figure where the wind typically moves faster over the slightly higher hole. If the horizontal area of the roof is 140 m2, use. Bernoulli to calculate the upward force that it would experience if the wind is moving at 250 km/hr over it (assume the air inside the house is still). Compare this to the weight of the roof if each square meter of roof has a mass of 73 kg.
