Pully
A shoelace threaded through the eyelets of a shoe can be considered as a pulley system.
Shoelaces and the holes they are threaded through represent a pulley system simple machine known as a mechanical advantage. By pulling on the shoelaces, you can control the tension, allowing you to tighten or loosen the shoes easily.
An airplane is not a simple machine. A lever is a simple machine. A wheel is a simple machine. Any machine that can be described by a mathematical formula is a simple machine.
A screw is a simple machine that is used to fasten objects together or to lift objects by rotating through a threaded shaft. It is classified as an inclined plane wrapped around a central rod.
A shoelace is an example of a type of simple machine known as a pulley. The act of tying a shoelace involves using friction to create tension and secure the shoe, which is a basic function of a pulley system.
A screw is the simple machine described as an inclined plane wrapped around a cylinder. It is commonly used to hold objects together or to lift loads.
wheel and axle
wheel and axle
wheel and axle
A knife is classified as a simple machine because it has only one function or movement, which is to cut or slice through objects. It utilizes a straight blade for this purpose, making it an example of a simple machine known as a wedge.
a screw - which is really just an incline plane going in a circle.
A razor is a type of wedge, which is a simple machine that has a sharp edge to help cut through materials.