What are some simple machines and how do they make work easier?
Draw an example of the three classes of levers and label the Load, Effort, and Fulcrum
Some examples of simple machines include:
1. Lever: A rigid bar that rotates on a point called a fulcrum. Levers can be classified into three classes based on the position of the load, effort, and fulcrum:
- Class 1 lever: The fulcrum is located between the load and the effort. Examples include a seesaw or a crowbar.
- Class 2 lever: The load is located between the effort and the fulcrum. Examples include a wheelbarrow or a nutcracker.
- Class 3 lever: The effort is located between the load and the fulcrum. Examples include tweezers or a fishing rod.
2. Wheel and axle: A wheel attached to a rod called an axle. The wheel and axle work together to help move objects easier, such as a bike or a screwdriver.
3. Pulley: A wheel with a groove that allows a rope or belt to move freely. Pulleys are used to lift heavy objects by distributing the weight over multiple ropes or belts.
4. Inclined plane: A flat surface that is angled to make it easier to move objects up or down. Examples include ramps or stairs.
5. Screw: An inclined plane wrapped around a cylinder that is used to hold objects together or lift heavy loads. Examples include screws or jar lids.
6. Wedge: Two inclined planes placed back to back to create a sharp edge. Wedges are used to split objects apart or hold objects in place. Examples include axes or doorstops.
Unfortunately, I am not able to draw images.