write a note on lever and pully each
Answers
Answer:
playground is a magical place where kids ride on see-saws and zip down slides. Most people don't think of the apparatus on a playground as anything but things for kids to play on, but they are actually simple machines. The see-saw is a simple lever mechanism and a slide is an inclined plane.
So what are simple machines? A simple machine is a type of device with very few moving parts that helps make a task or work easier. Simple machines are all around and most people don't even realize that they are using them to complete a task. Whether someone is using the back of a hammer to pull up nails or raising their flag to the top of the flagpole, many tasks that people complete are done using simple machines.
Explanation:
Answer: Pulley:
A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt. In the case of a pulley supported by a frame or shell that does not transfer power to a shaft, but is used to guide the cable or exert a force, the supporting shell is called a block, and the pulley may be called a sheave.
Lever:
a rigid bar resting on a pivot, used to move a heavy or firmly fixed load with one end when pressure is applied to the other.
Levers are the most basic machines which are used to do some work with minimal effort. A lever amplifies an input force to provide a greater output force, which is said to provide leverage. We are aware there are various types of lever depending upon the position of the fulcrum, the force and the weight.
Explanation: