There are 3 basic types of levers. 1st class, 2nd class and 3rd class. some change the direction of the force, some do not. some increase the force, some do not. A broom is an example of increasing speed, but not force. The direction of the effort (force you put in) and the resistance (force applied to the floor) is the same.
true
No, the force is applied to the lever, but is not an example of a lever. A lever is made up of a fulcrum, a force/load, and a force arm.-there are three types of levers-1st Class-The fulcrum is between the force arm and the resistance arm.ex:Seesaws, crowbars, and oars.-2nd Class-The resistance is between the force arm and the fulcrum.ex: Wheelbarrows and nutcrackers.-3rd Class-The force is applied between the resistance and the fulcrum.ex: Brooms and a kicking leg.Hope this helps.a08Deevic88www.ETangerineE.webs.com
The class 3 lever always has a longer resistance arm than the force arm. This is because the distance from the Fulcrum to the load/resistance is always going to be further that the fulcrum to where the effort/force is applied. If you look at a diagram of a 3rd class lever, you will be able to see why this is.
resistance
An increase in applied force will cause the object to accelerate.
What happens is that the resistance of 1100 newton is the MAXIMUM resistance. If a force of 1000 newton is applied, the actual resistance will also be 1000 newton. If a force greater than the maximum force of friction is applied, the object will start to move.
First class levers change direction of force applied, like using a crow bar to open a door.In a first class lever, the fulcrum is between the force arm and the resistance arm. Seesaws, crowbars, and oars are first-class levers.
Class 2.
Yes, your right.
The mechanical advantage of a lever is the ratio of the length of the lever on the applied force side of the fulcrum to the length of the lever on the resistance force side of the fulcrum. There are three types of levers - class 1, class 2, and class 3.
Yes, increased force applied to an object results in an increase in acceleration.