Examples of mechanical and potential energy –

The mechanical energy it surrounds us in the natural world and in the machines we build. Look around you and mechanical energy is everywhere.
There are many types of mechanical energyfrom a teenager biking to high school to a wrecking ball demolishing a house.

What is mechanical energy?

First, let’s consider what energy is. Energy is the ability to do work. There are many forms of energy, and mechanical energy is one of them.
Mechanical energy is one of the most common types of energy. Describes the ability of an object to perform some kind of work.
we see the mechanical energy in action every day when we pick up stationary objects and have them do tasks for us, from playing basketball to playing the guitar.
Mechanical energy is the energy or power that objects have through movement or change of position.
The Mechanical energy is defined as the ability of an object to do work.. The amount of work an object can do depends on two things: its position and its motion.
We need to understand more about how an object’s position and motion affect its energy before we look at mechanical energy any further.

What is potential energy?

Potential energy is positional energy, also called Stored energy. This energy exists due to the position of objects relative to each other. That is, the energy of the object changes when the position of the object changes, or when the object changes position.
For example, a book on the floor has relatively little potential energy: Has minimal ability to move on its own or interact with other stationary or moving objects. Now, let’s pick up that book and balance it on the edge of a shelf. It has much more potential energy at this point. Because? Because the book might fall over and squash a passing insect, or hurt your toe, or make a loud bang when it hits the ground.
we have given the book gravitational potential energy. The book is held in an upright position by the shelf. The gravitational forces of the Earth have given the book its stored energy of position, or potential energy. Suppose the mass of the object is greater. In that case, swap the book for a 10-pound dumbbell—the object’s gravitational potential energy also increases.
There is a second form of potential energy related to mechanical energy called elastic potential energy. This is potential energy that is stored in an object that can be compressed or stretched.
Think of an archer pulling back the elastic string of a bow. The taut string has elastic potential energy. Once released, the bungee cord will propel an arrow forward.
Both gravitational and elastic potential energy are energies of position and equally important factors when talking about mechanical energy.

What is kinetic energy?

The Kinetic energy refers to the energy of motion and movement. Think of our example from the book, balanced on a shelf, full of potential energy.
If the book falls to the ground, has kinetic energy during its fall: the energy of the book changes from potential energy to kinetic energy (motion). It’s the same with the arrow: its potential energy in a drawn bow is converted to kinetic energy when the arrow is shot and moves through the air.

Understand mechanical energy, potential energy, and kinetic energy

As mentioned, mechanical energy is the ability of an object to do work. Also is the sum of the potential energy of an object (gravitational or elastic) and its kinetic energy. Let’s see how all three interact.
The law of conservation of energy states that energy cannot be created or destroyed. Energy can only be transformed from one form of energy to another.
This law is vital to the mechanical energy because it means that we can understand the net force on a mechanical system. We can calculate the mechanical energy of an object, because the total energy (potential + kinetic) does not change.

Examples of mechanical and potential energy in daily life

A wrecking ball demolishing buildings has potential energy when the heavy ball is balanced at the top of its swing. When the ball is released, starting a circular motion, it has kinetic energy. When the ball hits the building, it applies force against the building, mechanical energy, the ability of an object to do work. In this case, the work done is by the ball destroying the building. Wind turbines use mechanical energy to convert wind energy into electrical energy. The energy from the wind acts on the blades making them spin, which turns the turbines that generate electricity. The wind has caused the work to be done using mechanical energy. A cyclist standing next to his bike has chemical potential energy thanks to the food in his stomach. A chemical process releases the chemical energy in the food to allow the cyclist to get on his bike and apply force to the pedals. Once on the bike, pedaling is a form of mechanical energy.Nuclear energy comes from power plants that use the heat of fission to turn electrical generators and produce electricity. The spin of the generators is mechanical energy. A moving baseball possesses mechanical energy due to both its high velocity (kinetic energy) and its vertical position above the ground (gravitational potential energy). Hitting with a hammer is an example of mechanical energy

What does conservation of mechanical energy mean?

Imagine a roller coaster moving along a straight track, using Kinetic energy. The roller coaster has just the right amount of energy to make it to the top of an oncoming rise, stopping at the top where it remains stationary. His kinetic energy has been converted to potential energy.

Inch by inch, the roller coaster crests and descends on the other side. The potential has been converted to an equivalent amount of kinetic energy.
The mechanical energy The total amount of the roller coaster car has not changed during the peaks and dips or during the conversion from kinetic energy to potential energy and back to kinetic energy.
The energy of the system has remained the same. This is called the Principle of Conservation of Mechanical Energy.