## The quantities of physics in the circular motion

The quantities of circular motion include angular displacement, angular velocity, and angular acceleration. 1. Angular displacement (θ) Displacement in circular motion is called angular displacement. Angular displacement including vector quantities, therefore, has magnitude and directions. The direction of angular...

## Projectile motion

Initial velocity (vo) and the component of initial velocity (vox and voy) An object which moves parabolic always has an initial speed. Because parabolic motion is a combination of movements in the horizontal and vertical directions, the initial velocity...

## Newton’s law of motion

1. Definition of force Force is something that causes things to accelerate. In other words, force is something that moves, stops, or changes the direction of movement of an object. Force is a vector quantity, therefore, has a magnitude...

## Friction force

1. Definition of the friction force Friction is a drag that works between the surfaces of objects that touch each other. In this topic, the frictional force studied is related to the frictional force acting between two solid body...

## Newton’s law of universal gravitation

In the subject of Newton’s law, was learned that every object which is initially rest becomes moves, or any object that initially moves becomes rest if there is “something” that moves or stops the object. Something is called “force”....

## Gravitational field and gravitational field strength

When you push a book on the table surface until the book moves, your hand touches the book. Likewise when you tie an object with a piece of rope then pull it until it moves, your hand touches the...

## Parallel plate capacitor

Definition of the parallel plate capacitor The parallel plate capacitor is a capacitor that consists of two parallel conductor plates, each plate having an equal cross-sectional area (A) and two plates separated by a certain distance (d), as shown...

## Kepler’s law

Do you still remember the memories of first riding a car? When in a moving car, you see as if a tree or building is moving. At that time you might think the trees or buildings are moving, while...

## Moment of force

1. Lever arm Review an object that rotates, such as the door of a room. When the door is opened or closed, the door rotates. The hinges that connect the door to the wall act as the axis of...

## Newton’s second law on rotational motion

4.1 The relationship between the moment of force, the moment of inertia, and the angular acceleration If there is a resultant force (ΣF) acting on an object with mass (m) then the object moves linearly with a certain acceleration...