5.4 - Written Questions

Question 1 A:

·      They have a large surface area so the amount of P can be spread around equally

·      Therefore there is less pressure on one area of the snow

Question 2 A:

·      For the same reason that Inuits wear snow boots. The bigger the S.A of the tyre, the more the P=F/A is spread around so it is the same P amount all over.

·      Therefore the tractor will not sink and get stuck in the mud.