# How do you build a catapult in physics?

1. Stack five craft sticks together and wrap a rubber band around each end.
2. Stack two craft sticks and wrap a rubber band around only one end.
3. Slide the five sticks in-between the two sticks, as shown.
4. Wrap a rubber band where the two sections meet to hold the catapult together.

## How is physics used in catapults?

Catapults operate using projectile motion, which is a form of science called Physics. Catapult physics is basically the use of stored energy to hurl a projectile (the payload). The three primary energy storage mechanisms are tension, torsion, and gravity.

## What are the 4 types of catapult?

The main types of catapults used were the trebuchet, mangonel, onager, and ballista.

## What is the formula of a catapult?

For example, a distance of 100 meters at 10 seconds is: vh = 100/10 = 10 m/s. So, if the projectile took 5 second to reach maximum height: vv = (9.8)(5) = 49.4 m/s.

## What is the best launch angle for a catapult?

A 45-degree angle is the best angle to maximize the efficiency of your catapult. The arm break can be made of the same material that comprises the frame of your catapult. It should run across the widths of the base and be in position to make contact with the catapult arm.

## What forces are used in a catapult?

What forces do catapults and trebuchets use? Catapults: Catapults take advantage of elastic force, involving stretched, compressed, bent, or twisted material. To prepare a catapult to launch a rock, it takes work to twist a rope (provide torsion), to stretch a rubber band (provide tension), or bend wood.

## What are 5 types of catapults?

The main types of catapults used were the trebuchet, mangonel, onager, and ballista.

## Is catapult push or pull?

Students pull back on the catapult, powering it up. When released, the catapult’s moving arm pushes a projectile, making it move in turn. Gravity and air resistance eventually stop the projectile.

## How does a catapult work step by step?

1. Pull the arm back (rope in case of Ballista)
2. Place missiles in bucket, sling, or nook.
3. Release potential energy. Work is done on the arm.
4. Arm collides with with base and is brought to an abrupt stop.
5. Missiles retain the kinetic energy from the work done on the arm.

## Why is 45 degrees the best launch angle?

As ball speed increases, so does the drag force and the lower is the required launch angle. A launch at 45 degrees would allow the ball to remain in the air for a longer time, but it would then be launched at a lower horizontal speed at the start and it would slow down more because of the longer flight time.

## What is the purpose of a catapult?

The catapult was an ancient siege machine that could hurl heavy objects or shoot arrows with great force and for considerable distances. Some catapults could throw stones weighing as much as 350 pounds for distances greater than 300 feet.

## What makes a good catapult?

Answer 1: For a good catapult, you want to have the end of the catapult arm move as fast as possible. The longer you make the catapult arm, the faster the end will move. But, if you make the catapult arm too long or too heavy, it will be harder and harder to accelerate the arm in the first place.

## How far can a catapult fire?

Catapults can launch things a fair distance — 500 to 1,000 feet (150 to 300 meters) is common. It is surprising how much energy they can store. The gears are important, because they create a winch.

## How do you calculate the distance of a catapult?

The equation for the distance traveled by a projectile being affected by gravity is sin(2θ)v2/g, where θ is the angle, v is the initial velocity and g is acceleration due to gravity. Assuming that v2/g is constant, the greatest distance will be when sin(2θ) is at its maximum, which is when 2θ = 90 degrees.

## How do you find the distance of a catapult?

1. Height = ( v sinθ )² / 2g.
2. Time of flight = 2 v sinθ / g.
3. Range or horizontal distance covered = v² ( sin 2θ ) / g.
4. assumes zero loss.

## What affects catapult distance?

The angle at which the throwing arm is pulled back to will affect both the distance the projectile will travel and also the height that it reaches when in the air.

## Does the length of a catapult arm affect distance?

Overall, as the arm length of the catapult increased, the ball was thrown farther.

## What type of catapult launches the farthest?

A trebuchet (French: trébuchet) is a type of catapult that uses a long arm to throw a projectile. It was a common powerful siege engine until the advent of gunpowder. The design of a trebuchet allows it to launch projectiles of greater weights further distances than that of a traditional catapult.

## How does a catapult get its energy?

So why is a catapult able to launch things so far? When you pull back the popsicle stick, potential energy, or “resting” energy gets stored up. And when you release the stick, the potential energy turns into kinetic energy, “moving” energy! Then gravity eventually pulls the launched object back to the ground.

## What problem does a catapult solve?

Catapults vaulted incendiary objects, arrows, stones of all sizes, and even corpses and vectors of pestilence into or over castle walls.

## How does friction work in a catapult?

Friction is the force between two objects rubbing together. In a catapult, many surfaces rubbing together are unavoidable. First is the friction between the key and the arm of the catapult, when the key is holding it down. The rougher the surface, the more friction it creates.

## Why is it called a catapult?

The Meaning of the Word Catapult Etymology Online says the word catapult comes from the Greek words kata ‘against’ and pallein ‘to hurl,’ an etymology that explains the working of the weapon, since the catapult is an ancient version of the cannon.

## What type of machine is a catapult?

A catapult is a lever simple machine. A lever changes the distribution of the weight, as seen in the catapult, as the weight is moved from the object being launched to the fulcrum, where the craft sticks are banded together.

## What type of lever is a catapult?

A catapult is classified as a class 1 lever. Class 1 levers are designed to change directions of the resistance (or load) with effort.