Answer : A bottle opener functions as a second-class lever: the fulcrum is the far end of the bottle opener, placed on the top of the crown, with the output at the near end of the bottle opener, on the crown edge, between the fulcrum and the hand: in these cases, one pushes up on the lever.

In general, the fulcrum point is considered a point where a lever turns; in particular, the pivot point. The fulcrum point is the center of a key activity or situation.

Fulcrum is the point about which the pivot or link rotates. Simply, a pivot is a link or it does have tangible physical significance and fulcrum is a representation of a rotation around an imaginary point.

Other examples of first class levers are pliers, scissors, a crow bar, a claw hammer, a see-saw and a weighing balance. In summary, in a first class lever the effort (force) moves over a large distance to move the load a smaller distance, and the fulcrum is between the effort (force) and the load.

In a Class Three Lever, the Force is between the Load and the Fulcrum. If the Force is closer to the Load, it would be easier to lift and a mechanical advantage. Examples are shovels, fishing rods, human arms and legs, tweezers, and ice tongs. An arm is another example of a third class lever.

In a third class lever, the effort is between the load and the fulcrum. Some examples of third class levers include fishing rods, cricket bats and chopsticks.

In a Class One Lever, the Fulcrum is located between the Load and the Force. The closer the Load is to the Fulcrum, the easier it is to lift (increased mechanical advantage). Examples include see-saws, crow bars, hammer claws, scissors, pliers, and boat oars.

A: To pry a nail out of a board, the fulcrum is located between the input and output forces. Therefore, when a hammer is used in this way it is a first class lever.

Kinds of levers – example Class – I lever: Fulcrum is between effort and load. Class – II lever: Load is between effort and fulcrum. This is used as a force multiplier.MA>1,VR>1. Example: Bottle opener, wheel barrow, etc. Class – III lever: Effort is between load and fulcrum.

It has been found by experiment that two equal forces acting in opposite directions, i.e., clockwise and counterclockwise, and applied to a uniform lever at equal distances from the fulcrum counteract each other and establish a state of equilibrium, or balance, in the lever. …

Scissors are really two levers put together. The handle on the toilet flusher is commonly called a fixed lever.

This is the law of the lever, which was proven by Archimedes using geometric reasoning. It shows that if the distance a from the fulcrum to where the input force is applied (point A) is greater than the distance b from fulcrum to where the output force is applied (point B), then the lever amplifies the input force.

Archimedes

Yes, knife is a class III lever, as here the effort(i.e. exerted by hands while cutting) is situated between fulcrum and load.

A lever is a simple machine made of a rigid beam and a fulcrum. The effort (input force) and load (output force) are applied to either end of the beam. When an effort is applied to one end of the lever, a load is applied at the other end of the lever.

A lever is a handle or bar that is attached to a piece of machinery and which you push or pull in order to operate the machinery. A lever is a long bar, one end of which is placed under a heavy object so that when you press down on the other end you can move the object.

English Language Learners Definition of lever : a bar or rod that is used to operate or adjust something on a machine, vehicle, device, etc.

A lever enables people to do work using less force. A lever usually is used to move or lift objects. Sometimes it is used to push against objects, but not actually move them. Levers can be used to exert a large force over a small distance at one end by exerting only a small force over a greater distance at the other.

The door handle has only a lever handle or knob which operates this latch. Pushing the handle down rotates the spindle, operating the tubular latch mechanism inside the door, allowing it to be opened. Pushing the lever or turning the knob pulls the cylinder in the direction of the turn.

Using a chef’s knife, you leave the tip of the blade on the table and rock up and down. That makes the far tip of the knife the fulcrum. Therefore the load is between the fulcrum and effort. This is a second class lever, analogous to a wheelbarrow.

The axe is an example of a simple machine, as it is a type of wedge, or dual inclined plane. The handle of the axe also acts as a lever allowing the user to increase the force at the cutting edge—not using the full length of the handle is known as choking the axe.