Sir Isaac Newton (1642-1727), an English physicist, mathematician, astronomer, natural philosopher, alchemist, and theologian, is one of the most influential scientist who ever lived.
In Newton’s work, the Principia was published on 5 July 1687, Newton stated what he believed to be the three universal laws of motion. It is said that these laws enabled many of the advances of the Industrial Revolution which soon followed. It was not Newton’s identification of the laws of motion that contributed to the development of machines, instead machines function because of the laws. In other words, things don’t move when you push on them because Newton’s second law of motion identifies the relation between force and motion. From the beginning of time, a force applied to an object caused the object to move. Newton identified and gave mathematical relations between force and motion.
Newton’s Laws of Motion Explain the Spin Difference Between
A Hard Boiled Egg and A Raw Egg
Newton’s First Law of Motion introduces the term inertia, which is a measure of how easy or how hard it is to move a stationary object.
For specific instructions for this investigation, as well as a model for a data sheet,
See Education.com: Inertia of Raw and Hard Boiled Eggs
The content of a hard boiled egg is solid. Also the egg shell is stuck to the solid “white” part of the egg inside. Thus, if you spin a boiled egg, as the shell moves, it’s solid content moves with it. In other words, the egg shell and its content move as one unit.
The force you apply to the shell when spinning a hard boiled egg spins the entire egg because when cooked the egg becomes a single solid unit. Thus, any force applied to the shell is transferred to the egg as a whole causing it to rotate. As a single mass unit, the boiled egg has more inertia. Since the egg is spinning, it is more correct to say that the spinning egg has rotational inertia.
Note: When a force causes an object to move, scientist call this work. In other words, work is force acting on an object causing it to move. Energy is defined as the ability to do work.
When you applied torque (rotating force) to the eggs, during the time you were turning the eggs with your hand you were doing work on the eggs. In other words, the work done on the eggs is equal to the distance the egg moved only during the time you were applying a force (spinning with your hand). The work done on the egg is equal to the energy the eggs receive as a result of the work.
More to Discover
Since a raw egg is difficult to spin because it has separate parts all moving at different speeds and a boiled egg being solid throughout easily spins, which type of egg will stop if touched?
Hypothesis: If the boiled egg’s content moves with the shell and the raw egg’s content lacks behind, then touching the eggs will ———————-(What do you think will happen and why?)
Test each egg one at a time. Spin each egg, then gently touch the egg to stop its motion. Observe each egg after it stops for a few seconds. What happens?
In a short time, a raw egg will start spinning again. This is because you only stopped the egg’s shell but its fluid content is still moving and as it moves it drags on the shell starting it to move again, but slower. Since the boiled egg is one solid mass, when you touch the shell the entire egg stops.