Question

Which of the following situations involves a person using a simple machine to get a work done?

• A. A person sleeping on the couch.
• B. A girl cutting an apple with a knife.
• C. A man using sugar- tongs to pick up sugar cubes.
• D. A woman using a pulley to lift up a bucket of water from the well.

Answer 1

Answer: (B), (C), (D)

The correct options are
B

A girl cutting an apple with a knife.

C

A man using sugar- tongs to pick up sugar cubes.

D

A woman using a pulley to lift up a bucket of water from the well.

A person sleeping on the couch. In this case, there is no usage of simple machine to get a work done.

A knife is a wedge. So, the girl uses a simple machine to cut an apple.

A man using sugar- tongs to pick up sugar cubes. Sugar tongs are a type of a lever. So in this case as well, a machine is used to get a work done.

A woman using a pulley to lift up a bucket of water from the well. Here, pulley is a simple machine which is used to get the work done.