In the first class lever the fulcrum is located between the effort and the resistance.In second class lever The second class of lever has the fulcrum at one end, the effort applied at the other end, and the resistance somewhere between those points. [ The third class of levers has the fulcrum at one end of the lever, and the weight or resistance to be overcome is at the other end, with the effort applied at some point between. ]
No there are 4 pre early middle and late
It is very important because it helps you to reach and keep up a healthy weight, decrease your hazard of constant illnesses (like heart malady and cancer).
Please correct any mistakes in my answer!! I'd be glad to fix it!! :)
