# Mechanics Simulation

## Gravitational Lensing

Space-time warpage Einstein, famous for theory of relativity, thought that the mass of an object warps space-time. The larger the mass, the greater the degree of time-space warp. He explained that an…

## Impulse

momentum Moving or rotating objects have the momentum. Momentum is a numerical representation of the motion of an object. The momentum of an object that is moving linearly can be calculated by…

## Ticker Timer (Movement on the slope)

Ticker Timer It is a device to record the movement of an object by taking a spot on a paper tape at regular time intervals. A typical ticker timer is plugged into…

## F = ma (Newton’s law of motion)

Force changes the motion Consider the process of changing the movement by applying force to the cart. If the amount of force acting on the cart is doubled or tripled, the speed…

## Parabolic motion (Monkey and Hunter)

Projectile Motion When you throw an object, the object falls down with a certain curve. The object performs a parabolic motion. This is a motion on a two-dimensional plane, not a straight…

## Conical pendulum

3 forces acting on a conical pendulum Gravity(=mg): The force the Earth pulls. Tension: The force applied to both ends of the thread. Tension is always directed to the center from both…

## Force to move the pendulum

Tension by gravity In physics, tension is the force on a string connecting two objects. Generally, the tension is calculated from both ends toward the center.길이 $$l$$인 진자를 Let’s consider…

## Moment of Inertia (3D)

● It’s a tube. The radius of the tube is outside: inside = 0.75: 1. There is no rolling friction. ● It’s a tube. The radius of the tube is outside: inside…

## Connection of springs

You can hang multiple springs by touching (or clicking) the screen. What’s the difference when connecting multiple springs in series or parallel? (Notice) All springs and weights each have the same properties…

## Spring Scales

The spring scale is a tool that measures the mass and gravity of an object using the spring’s elastic force. The spring of this scale is lengthened by gravity and shortened by…

## Spring pendulum(horizontal)

This simulation ignored the effects of friction. Simple harmonic oscillation In everyday life, we see a lot of the movements that repeated same oscillation. Like below, shaky or suspended objects are doing…

## “Free falling” or “Thrown to the horizontal direction”

How to use the simulation Drag the ball with your mouse to free fall it in the air. Drag your mouse on the cliff to observe the parabolic motion. You can change…