Catapult Definition and 91 Threads

Homework Statement How would you find the energy efficiency of a torsion catapult ? (one i built for project) I have the Force at which I am pulling the arm. F = 20N also the angle from origin to the point of release ( or when the ball leaves the arm) Theta = 50 degrees...

Help with a catapult Homework Statement Hi all I have design a prac to investigate the efficiency of a catapult, was wondering if anyone could shed some light into this area Homework Equations Ee=0.5kx^2 (hookes law) The Attempt at a Solution I was thinking that my independent...

The strain energy of a catapult extended by 1metre is 20J. When x=1m, A 1kg block is catapulted a distance of 2.5metres from the point of release along a horizontal floor. a. What is the magnitude of the force of friction between the block and the floor? b. What is the maximum kintetic...

Im not sure if this is the right section to post this but if it isnt, feel free to move it! :) My physics class is going to south dakota state university's physics and engineering expo and we all have to enter in at least one of the competitions, my friend and I have entered in a competition...

Homework Statement A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam powered catapult. The thrust of its engines is 2.3x10^5 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 4.5x10^7 at lift off. What is...

How does mass affect the launch of a catapult and the projectile flight?? Homework Statement How does the mass of the projectile affect the projectile as it is being lauched and after it is launched? Could your catapult launch a tennis ball and a boulder equally well? Once in flight...

Please,I need help with this problem... You are launching a 200kg projectile over the castle wall and trying to hit the keep. If the catapult holds the projectile for 2 seconds before releasing what is the average force delievered by the catapult? The keep itself is located 75 meters...

This is a catapult design project. Homework Statement The counterweight is 400lb, the boulder (projectile) is 50lb and the throwing arm is 100lb. The throwing arm is assumed to be rigid, uniform in density, and weight. The throwing arm is also 17ft in total length. The throwing arm starts...

Find the ideal energy transferred to a projectile in a spring launching device, the device is a catapult which involves a bungee cord being stretched and has the cord attached to a throwarm which is pivoting on a circular rod. i have calculated the elastic energy stored in the cord at the...

we were given a project in physics where you build a catapult that shoots a tennis ball 2, 4, or 6m. Now i have a basic design that I am not sure if it will shoot 2m. all i need is the ball to be able to shoot 2m into a 5 gallon bucket. here is the design i am loooking at...

Homework Statement Catapult A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H = 35.0 m above sea level, directed at an angle theta = 48.7° above the horizontal, and with a speed v = 26.1 m/s. Assuming that air...

I'm trying to design a simple torsion spring catapult to launch a 0.15kg ball at a velocity of 35 m/sec at the moment of separation. The ball will be in direct contact with the unrestrained end of the spring. As a starting point, I'm planning a 0.3m length for that "arm" end of the spring as...

What do people think about this 1. Put steam catapults on all airport runways (or perhaps use Linear Induction Motors) 2. Get the plane to accelerate all the way from the gate following a track, through to launch, so acceleration for take off starts from 'go'. Apply an acceleration...

The culminating task for my physics course was to build a catapult that can launch a ball bearing 2-7m. I built the catapult out of wood and its on a pivot and I'm using a bungee cord to make it snap back when its pulled back. How to I develop a formula to calculate prior to launch how far...

Hi! I'm making a onager for a project and so far I'm not having much luck! My Onager has to fit inside a 0.5m x 0.5m x 0.5m cube, and it will be throwing tennis balls. I've been browsing around a few nights already and found this topic, which has helped me the most by far...

A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.20 * 10^5 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 4.00 *10^7 J at lift-off. What is the work done...

a catapult that shoots at 45 degrees, with counterweight on one side. the catapult is similar to a see-saw, where projectile is placed on one end, and the counterweight to another end. the counterweight is lifted to a 45degrees and released. is there any way to find the theoretical range of...

Homework Statement A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 3.14 x 10^5 N. In being launched from rest it moves through a distance of 85.1 m and has a kinetic energy of 5.63 x 10^7 J at...

Homework Statement Hello!, Beforehand i want to thank you for taking your time to look at this. Here's the deal: There's a contest in my school for Science Fair. We have to make a catapult and throw tennis balls as projectiles. Here are the rules: 1) The catapult max measurements have to...

Is anyone familiar with a rope skein like on a torsion catapult? Essentially there are two points between which a great length of rope is wound. The base of an arm is placed in the center of this oblong before both of the fixed points are twisted in the same direction. This process forces the...

An aircraft carriers capapult accelerates a 2000-kg jet aircraft from rst to a lauch speed of 320m/s in 2.0s. a) The net force on the plane is ? b) the length of the catapult is ? F= m/a Lenght= at^2/2 vf=vo*at 320m/s= (0) * a * 2.0s a= 160 m/s F= 2000kg *...

Homework Statement You shoot a 57 g pebble straight up with a catapult whose spring constant is 310 N/m. The catapult is initially stretched by 0.30 m. How high above the starting point does the pebble fly? Ignore air resistance. _____ m Homework Equations ? The Attempt at a...

Aircraft carriers have been catapulting off aircraft for many years now, so that technology is not strange. At the same time, magnetic propulsion is becoming more and more common for various purposes. So why are these two technologies not combined for commercial aircraft? Imagine a rail track...

Homework Statement A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H of 33.0 m above sea level, directed at an angle θ above the horizontal with an unknown speed v0 The projectile remains in flight for...

I'm doing something for a science fair experiment and I'm trying to compare a catapult to a trebuchet. i will be comparing range, accuracy, and efficiency. But i don't know the equation to find efficiency of each siege wepaon. both of these medieval wepaons will be tabletop size som they won't...

Homework Statement A Jet fighter plane is launched from a catapult on an aircraft carrier. It reaches a speed of 42 m/s at the end of the catapult, and this requires 2.0s. Assuming the acceleration is constant, what is the length of the catapult? Am I looking at this correctly...

Homework Statement How simple mechanics equations can be used to describe force, acceleration, speed, distance, etc. of a catapult. Homework Equations This is my question. I have the time and distance traveled already, I'm hoping for some help as to what formulas to use. I don't...

Homework Statement A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H of 32.0 m above sea level, directed at an angle q above the horizontal with an unknown speed v0...

Too funny...:smile: :smile: :smile:

Hi, me and a friend of mine decided to construct a Roman Onager for school. This is because of some kind of (practical) exam every student has to undertake here in the Netherlands. For example.. some people study the effects of alcohol on the human body and others build a rocket and try to...

hi everyone.. this is my first post :smile: im investigating a catapult i would like to know how to control an angle of a catapult to get maximum distance ? thanks ..

I'm not sure if I posted this in the right thread, if not feel free to move it. I have been assigned to build a catapult as my physics project. I have researched a bit and saw some examples. The main purpose of the catapult will be accuracy. First of all, I wanted to ask you experts which...

I'm doing a Assignment is to conststruce a captapult that will launch a marshmallow(Large size) at target on the floor at the other end of the classroom. I designed catapult. the rules saing the energy;; to launch the marshmallow cannot come directly from the motion of a human being.so i used...

I need to make a catapult in less than 2 weeks... it has to be able to throw a 5 cent coin (aust coin) on exactly 2 metres... its not much but i can't figure out what design I'm going to make, since i need to be able to do calculations beforehand and make the catapult using my calcs... so now i...

I posted this on the k-12 forum but i haven't been getting any responses. At first glance the physics of a seesaw seem quite simple, however I've been stumped on a problem. For part of my Physics project, I am incorporating a seesaw catapult where one weight will be dropped on one side...

At first glance the physics of a seesaw seem quite simple, however I've been stumped on a problem. For part of my Physics project, I am incorporating a seesaw catapult where one weight will be dropped on one side launching the hacky sack on the other side. Simple right? Of course... but the...

I have a catapult that is a class 1 lever i.e. a rubber band pulls down on the beem on one side of the fulcrum; the load is launched from the end of the beem on the other side of the fulcrum. I want to increase the throwing distance of the catapult. I recognize that one option is to increase...

Hi, I have a big problem... I got a project on building a catapult. Easy, right? WRONG! We are supposed to determine the arm length without trial and error and I have no clue what to do. Please please help! Catapult is supposed to be built with 3/4" paper clamp as the only energy source and...

A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H of 34.0m above sea level, directed at an angle above the horizontal with an unknown speed. The projectile remains in flight for 6.00 seconds and travels a horizontal...

im doing my a-level coursework on the physics of a fishing catapult if anyon has any useful information it would be greatly appreciated

Hello. "Another notable thing is that Pioneer 10 used the gravitational catapulting effect of Jupiter. That was the first time that was ever done for interplanetary light. Pioneer 11 followed in its footsteps about seven years later to go out of the solar system." That text was taken from...