examples of class 3 levers
1. A fishing rod where the hand acts as the fulcrum, the arm applies the effort, and the fish is the load.
2. A broom where the hand acts as the fulcrum, the arm applies the effort, and the contact point with the floor is the load.
3. A wheelbarrow where the wheel acts as the fulcrum, the handle applies the effort, and the load (such as rocks or soil) is at the front.
4. A pair of tongs where the hand acts as the fulcrum, the arm applies the effort, and the object being picked up or squeezed is the load.
5. A baseball bat where the hands act as the fulcrum, the arms provide the effort, and the ball is the load.
Class 3 levers are a type of simple machine that have the fulcrum located at one end, the input force applied at the other end, and the output force located between the fulcrum and the input force. In class 3 levers, the output force is greater in magnitude but shorter in distance compared to the input force. Some examples of class 3 levers include:
1. Forearm: When you flex your arm at the elbow, your bicep muscle applies the input force on your lower arm bone, acting as the fulcrum. Your hand, where the load is located, serves as the output force. The elbow joint acts as the fulcrum.
2. Tweezers: Tweezers are an example of a class 3 lever as well. The fulcrum is located at the joint where the two arms of the tweezers meet. When pressure is applied to the handle, the other end with the tips applies a greater force to grip objects.
3. Fishing Rod: A fishing rod is also a class 3 lever. The fulcrum is where your hand holds the rod, the input force is the effort you apply to cast or reel in the rod, and the bending of the rod serves as the output force, which aids in casting or catching fish.
4. Baseball bat: A baseball bat is a classic example of a class 3 lever. The fulcrum is located where you grip the bat, the input force is the force you apply with your hands to swing the bat, and the output force is the impact the bat makes on the ball.
5. Hockey stick: Similar to the baseball bat, a hockey stick is also an example of a class 3 lever. The fulcrum is where you hold the stick, the input force is the force you apply to hit the puck, and the output force is the impact the stick makes on the puck.
These are just a few examples of class 3 levers. Remember, class 3 levers have the fulcrum at one end, the input force at the other end, and the output force located between the fulcrum and the input force.
Sure! Class 3 levers are one of the three types of levers identified by the position of the load, effort, and fulcrum. In class 3 levers, the fulcrum is at one end, the effort is applied in the middle, and the load is at the opposite end. Class 3 levers are known for providing speed and distance advantages, but they have a mechanical disadvantage since the effort is greater than the load.
Here are a few examples of class 3 levers:
1. Human forearm: When you curl your forearm to lift a weight, your elbow acts as the fulcrum, your bicep muscle applies the effort in the middle, and the weight you are lifting is the load at the opposite end.
2. Fishing rod: When you cast a fishing line, the handle of the fishing rod acts as the fulcrum, your hand applies the effort in the middle, and the weight of the bait or lure is the load at the opposite end.
3. Baseball bat: When you swing a baseball bat, your hands act as the fulcrum, your arms provide the effort in the middle, and the weight of the bat and the force applied when hitting the ball are the load at the opposite end.
4. Pliers: When you use a pair of pliers to grip and squeeze an object, the joint where the pliers pivot acts as the fulcrum, your hand applies the effort in the middle, and the object being squeezed is the load at the opposite end.
Remember, a lever can be classified as a class 3 lever based on the relative positions of the fulcrum, effort, and load.