When she needs to water her plants she can simply use the pulley system to bring the plants down. We can see this working ...

The solution? A pulley system to make everything easier. The concept is simple. [Barnso]’s system uses three pulleys. The headphone cable goes to the PC, and then runs over the first pulley.

Single pulley systems can be seen in cranes, lifting a bucket from a well, raising a flag or adjusting window blinds. Figure caption, A single fixed pulley has a mechanical advantage of one One ...