Difference between 1st, 2nd, and 3rd class levers

Learn about 1st class levers,2nd class levers, and 3rd class levers.
Levers are simple machines that are found in many tools you use at work and at home.
A first-class lever has the fulcrum in the middle and the load and effort on each side of the fulcrum.
2nd class levers have the fulcrum on one end and the load in between the fulcrum and the force.
A third class lever has the force in between the fulcrum and the load.
**** After listening to feedback from the comments the way I had the arrows it is confusing. I had the arrow on the load in the direction that it is acting on the load. This seems confusing. Also, I have a typo at the hammer and label it a 2nd class lever. I describe it as a 3rd class but label it a 2nd class. Sorry for the mistake.
As a result I created a new video, and added a nice mnemonic device to help memorize the different types.

[brittanyfeagin]

I saw someone make a quick cheat for it. Write F L E on a sheet of paper, then under it, align the numbers 1 2 3.
The way to read it is 1st class has the letter F in the middle for fulcrum. The 2nd class has the Lever in the middle. The 3rd class has the effort in the middle.
FLE=123 tells you which class and what’s in the middle!

[MooMooMath]

Thanks for stopping by MooMooMath and Science. You may enjoy-10 Facts about levers

[activemedia]

You just helped us get a school project done! Thanks

[MoonStarDust_]

Thank god you are not a ded channel and upload till this date cause this helped me

[jaredraynor]

A hammer can be used as all three depending on application. 1st class when pulling a nail, 2nd class when rip-clawing a board, and 3rd when driving a nail.

[bflores]

The last picture says 2nd class but a hammer is a 3rd class lever. Other wise great video!!! Very easy to understand

[saigemorey]

Almost screwed me up on my test saying the hammer is a second class leveler!

[SauravMishra]

Thanks Sir i am in class 9, you explained it to me on an Extreame Basic Fundamental level about The worrking and differences between classes of levers, i am preparing for JEE Advanced, where your bacis and Concepts should be Extreamly and crystal clear . Thanks a lot as it helps me in Solving Extreamly Advanced level questions . Thanks

[mayabhattarai]

Thank you very much bro I am not going to be confused now on first, second and third class leaver.Again thank you bro❤️❤️👍👍.

[RK-]

hammer is not 2nd class lever .. it is 1st class lever . please check once

[Icyditz]

and a hammer throw is a third-class levers allow you to do fast movements such as throwing, kick- ing, or swinging a tennis racket. Figure 2.4 Third-class lever: biceps curl. effort (or force applied) is between the weight (or resistance) and the fulcrum (or pivot point). Third-class levers increase speed.

[Joemiami]

Great video easy to follow. Need to change letter head of hammer to Class 3. Showing as class 2. Thanks,

[edwinsiju]

Thank you very much i hope it will surely helps in my exams

[natemajor]

Why is the load pointed up? Wouldn’t it be weighing down so the arrows pointed down?

[kennethmarshall]

When would it actually be preferable to use a second class lever rather than one of the other two classes? I can see why a 3rd class lever would be better to use for a task - a good example being tongs, where you want to control a fine movement which might be difficult with your over powerful and clumsy hand.

[The_Gamer_Bio-Cola]

I love levers! they level the playing fields in life ;)

[Icyditz]

MooMooMath and Science A hammer is a first-class lever when it is used to pry a nail out of a board. The hammer rests on the board. Your hand (holding onto the handle) applies a downward force. The fulcrum (the point resting on the board) is between the effort and the load, which is characteristic of a first-class lever.

[Azlindgordon]

Tq...I'm prepared for my first level exam this month 💪

[georgemccune]

Well that's to the failure point. How ever as a mechanic I can say with certainty depending on the door jamb that the striker will move if the person is heavy enough. Sometimes they need a bit of tweaking and they make a tool that grabs the striker and will allow it to move. I will say I don't have this step to examine and try out so that leaves wiggle room for error but unless it's loading parallel to it's mount it will flex the steel the striker is mounted in even tho it's generally double and sometimes triple layered but that's only around the striker. This step looks like it touches the jamb bellow the striker and more than likely any layering inside and the weight is supported out at the end of a striker. That's basically a 3rd class lever, given proper weight it will bend the jamb. Strikers are tough as hell but not the door jamb which any firefighter using jaws of life will tell you is where to cut not the striker.

[dombosel]

Thanks for this I’m too lazy to look at the textbook