Question

10. Explain the following:
(a) It is easier to cut with a sharp knife than with a
blunt one.
(b) Sleepers are laid below the rails, only (b) one please​

Answer 1

Answer:

pressure

Explanation:

P= force/unit area

so pressure increases as area decreases.

A sharp knife has less area, so pressure is more.

it is reverse in case

of a blunt knife.

sleepers are laid to distribute pressure to a large area and the rails don't sink.