Skip to main content

Force

 


From many centuries the problem of motion and its causes had puzzled scientists and philosophers until Galileo and Newton developed entirely different approach to understand motion. We have observed that, whenever an object is in motion it involves a form of hit, push or pull. In physics, a force is defined as any interaction such as hit, push, or pull, when unopposed, will change the state of an object. Hence, a force can put a moving object into state of rest or vice versa and a force can also change the shape, size, speed, velocity, or direction of motion. In our upcoming episodes we will discuss, to change the state of an object, either it is in state of motion or state of rest, we need a net external force.

Now let us understand the concept of net force. Net force is the vector sum of forces acting on a particle or body. The net force is a single force that replaces the effect of the original forces on the particle's state. It gives the particle the same acceleration as all those actual forces together. Simply, if more than two forces are being applied on an object at rest, the object will move only in one direction which is the direction of sum of all the forces. This resultant force is known as net force. Based on this concept, force is further subdivided into two categories: Balanced force and Unbalanced force.

Suppose that an object is being pulled from two opposite ends in opposite direction with equal forces, the net force on the object will be zero. Thus, object will not change its state of motion or state of rest. This force is known as balanced force.

Similarly, if an object is being pulled from two opposite ends in opposite direction with unequal forces, the net force on the object will not be zero. Thus, object will move in the direction of resultant force. This force is known as unbalanced force.

Broadly, forces are differentiated in two categories.

 

Fundamental Forces such as

  • Gravitational Force
  • Electromagnetic Force
  • Strong Nuclear Force and
  • Weak Nuclear Force

 

Non-Fundamental Forces such as;

  • Normal Force
  • Friction
  • Tension and
  • Elastic Force etc.

 



Tags:

Comments

Post a Comment

Popular posts from this blog

Buoyancy Force and Archimedes’ principle

Buoyancy Force Buoyancy, or upthrust, is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object.   We have come across many daily life observations of sinking objects in water and floating on it. As boats, ships , plastic bottles and straws float on the surface of water, some fruits, iron pieces and stones etc. don't float on the water. We have also experienced that, when we try to sink tightly capped empty bottles in water, it forces it up towards the surface. We have also experienced that; a heavy piece of brick or iron feels lighter inside water than outside. Although! Humans discovered this long ago in history. But the net amount of force exerted by water on any object was still a mystery. Until Archimedes figured it out in 246 BC.   Archimedes’ principle Archimedes observed that, when we sink any object in a completely filled vessel with water, it displaces some water. He also calculated that; the net buoyancy force ...
Post a Comment
Read more

Organic Compounds

  Organic compounds and their differences form inorganic compounds Organic compounds are compounds that contain carbon atoms bonded with other elements such as hydrogen (H), oxygen (O), nitrogen (N), sulfur (S), and halogens (such as chlorine and bromine). They form the basis of organic chemistry, which is the study of carbon-containing compounds. The key characteristic that sets organic compounds apart from inorganic compounds is the presence of carbon. Carbon has a unique ability to form strong covalent bonds with other carbon atoms and a wide range of other elements, resulting in a vast number of organic compounds with diverse structures and properties. In contrast, inorganic compounds are typically derived from minerals and do not contain carbon-hydrogen (C-H) bonds. Inorganic compounds can still contain carbon, but they often have a different composition and bonding pattern than organic compounds. Examples of inorganic compounds include minerals, salts, metals, and nonme...
Post a Comment
Read more

Electric Power - Brief of History, Definition and Application

  Brief history of Electric Power 18th Century: Static Electricity Sparks Interest The story of electric power begins with the exploration of static electricity. In the 18th century, scientists like Benjamin Franklin were experimenting with static charges, laying the foundation for understanding the nature of electrical phenomena. Early 19th Century: Volta Unleashes the Battery In 1800, Alessandro Volta introduced the voltaic pile, an early form of the battery. This invention marked a significant leap, providing a consistent source of electric potential. It set the stage for practical applications of electric power. 1831: Faraday's Electromagnetic Induction Michael Faraday's groundbreaking work on electromagnetic induction in 1831 was a game-changer. It demonstrated that a changing magnetic field could induce an electric current. This discovery laid the groundwork for the development of generators. Late 19th Century: The Age of Edison and Tesla The late 19th cen...
Post a Comment
Read more