Question

A machine will always have less output work than the work put into it.

True or False?

Answer 1

False. A machine can have an output work greater than the work put into it, particularly in the case of a machine that has high efficiency and can amplify the input work.

Answer 2

When building a house, which of the following is a simple machine that a construction worker would use?


cement
safety hat
pulley

Answer 3

Pulley.