Levers

Question 1

First order lever (Class 1)

Answer 1

A first order lever has the load and effort either side of a fulcrum. As the fulcrum is moved closer to the load, the effort required to lift the load down. E.G. an adult and child on a seesaw. The adult is the effort and the child is the load.

Question 2

Second order lever (Class 2)

Answer 2

A second order lever has the effort and the fulcrum situated either side of the lever, similar to the barrowman example. E.G. A wheelbarrow - the wheels is the fulcrum, the stuff inside is the load and the person lifting it is the effort.

Question 3

Third order lever (Class 3)

Answer 3

A third order lever placed the load and the fulcrum either side of the effort
E.G. A fishing rod
Your arm exercising - the weight is the load your bicep is the effort and the fulcrum is your elbow