Lewis has a copper pipe with a length of 150 cm and a mass of 800 grams. He cuts a piece of the copper pipe with a length of 90 cm. How do you work out the mass of this piece of copper pipe?
I would consider the Linear Density of the pipe as:
When you cut it you are left with
From the question, we get a relationship of equality between the length and mass of the pipe.
There are two conversion factors as shown below.