Gears & Gear Ratios

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The concept of is fundamental to understanding how objects interact with one another in the universe. It is the force that pulls two masses toward each other, and it is directly proportional to the mass of the objects involved. The formula to calculate the gravitational force between two objects is given by law of universal gravitation, which states that the force is equal to the product of the masses divided by the square of the distance between their centers.



In addition to gravity, other forces also play a significant role in motion, such as and tension. Friction acts in the opposite direction to the motion of an object, and it is dependent on the nature of the surfaces in contact. On the other hand, tension is the force transmitted through a string, rope, or any flexible connector when it is pulled tight by forces acting at each end. Understanding these forces helps in predicting how objects will move under various conditions.



The concept of is defined as the rate of change of velocity of an object over time. According to Newton's second law of motion, an object's acceleration is directly proportional to the net force acting on it and inversely proportional to its mass. This relationship is expressed in the formula , where F represents the force, m is the mass, and a is the acceleration. This principle is crucial for analyzing motion in physics.



Finally, when studying the motion of objects, it is important to consider the reference frame from which the motion is observed. A reference frame remains at rest while an object moves, and a moving reference frame means that the observer is also in motion. The understanding of these frames allows scientists and engineers to analyze and describe motion accurately, leading to advancements in technology and engineering applications.

Keywords

friction | acceleration | static | newton's | f = ma | gravity |