Question

4. You have to load your suitcase on to a truck. You are not able to lift the suitcase. Which
simple machine can help you do this? Why?​

Answer 1

Answer:

Pulleys make lifting easier because more sections of rope are supporting the weight. It is much easier to pull down than to pull up a load, as our own body weight and gravity help us to pull down. Thus, a pulley is used extensively to do twice as much work with the same effort.

Explanation:

Answer 2

also it can be helpul to do other things or lift things