Question

subject science
please give me answer​

Answer 1

Answer:

1. Effort is the force used on a lever.

2. A pulley helps to lift up heavy weights.

3. A wedge  consists of two inclined planes attached back to back.

4. In the third class of levers, the effort is between the load and the fulcrum.

5. The lid of a jar is an example of screw.