Isaac Newton Case Study

Newton’s Early Life:

Sir Isaac Newton was born in the village of Woolsthorpe, Lincolnshire, England. He was an only child, his father was also called Isaac Newton, but he died 3 months later after his child was born, Newton’s father was considered as a wealthy farmer at his times. Newton was a premature baby when he was born he was weak and fragile, many people thought that he wouldn’t survive. When Newton was at the age of 3, his biological mother, Hannah Ayscough Newton, got married again by a prosperous minister named as Barnabas Smith. Hannah left little Newton with his caring grandmother and went on with her life to live with her new husband, this experience had a huge psychological effect on him, later displaying itself as a severe sense

So we could say that forces result only from an interaction between objects.
Types of Forces
There are two types of forces:
-Contact Forces
-Forces at a Distance

Contact Forces
Are forces that result when two objects are physically contacting one another, examples of these forces: Frictional Forces, Tension forces that result from vibrations, Normal force which the force that holds the object at place.
Forces at a Distance
Are Forces that result when interacting objects are not physically contacting one another. Examples: gravitational force is the simplest one, electric force is a bit complex; the electric force works when the electrons outside the nucleus and the protons inside feel a pull between them.
Mathematical relation:
We can calculate the magnitude of the force acting on an object by this simple equation
F=m.a where “F” is the force and “m” is the mass and “a” is acceleration.
Here are some examples:

1) The net external force on the propeller of a 3.7 kg model airplane is 6.8 N forward.What is the acceleration of the airplane?
Mass=3.7 kg
Force=6.8 N
F=m.a
6.8=3.7*a a=6.8/3.7 a=1.8378