Question:

 
An Object Cannot Remain At Rest Unless Which Of The Following Holds
 

Answer:

 

Introduction:

 
The concept of rest and motion has been an integral part of the study of physics for centuries. In the absence of any external forces acting on it, an object at rest will remain at rest, and an object in motion will continue to move at a constant speed in a straight line. This fundamental principle of physics is known as Newton's first law of motion, also referred to as the law of inertia. According to this law, an object cannot remain at rest unless certain conditions are met. In this essay, we will discuss the conditions that must be met for an object to remain at rest, and how these conditions relate to Newton's first law of motion.
 

Newton's First Law Of Motion:

 
Before discussing the conditions for an object to remain at rest, let us first understand the concept of Newton's first law of motion. This law states that an object at rest will remain at rest, and an object in motion will continue to move at a constant speed in a straight line unless acted upon by an external force. In other words, an object will maintain its state of rest or motion unless an external force acts on it to change that state. This law is often referred to as the law of inertia, which means that an object will resist any change in its state of rest or motion.
 

Conditions For An Object To Remain At Rest:

 
Now let us discuss the conditions that must be met for an object to remain at rest. According to Newton's first law of motion, an object at rest will remain at rest unless acted upon by an external force. Therefore, if an object is at rest, it will remain at rest if there are no external forces acting on it. In other words, the net force acting on the object must be zero. This means that the forces acting on the object in all directions must be balanced.
 
 
To understand this concept, let us consider an example of a book lying on a table. The book is at rest, and the force of gravity is acting on it, pulling it down towards the center of the earth. However, the table exerts an equal and opposite force on the book, known as the normal force, which prevents the book from falling through the table. The force of gravity and the normal force are equal in magnitude and opposite in direction, resulting in a net force of zero. Therefore, the book remains at rest on the table.
 
 
Another example of an object at rest is a stationary car parked on a level road. In this case, the weight of the car is acting downwards due to gravity, and the normal force of the road is acting upwards. Again, these forces are equal in magnitude and opposite in direction, resulting in a net force of zero. Therefore, the car remains at rest on the road.
 

Conclusion:

 
In conclusion, an object cannot remain at rest unless the net force acting on it is zero. This means that the forces acting on the object in all directions must be balanced. This principle is explained by Newton's first law of motion, which states that an object at rest will remain at rest unless acted upon by an external force. Understanding this concept is essential in the study of physics and is fundamental in explaining the behavior of objects in our everyday lives.
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