# How do you make a catapult with a mouse trap?

## What is the physics behind a mousetrap car?

The mousetrap storespotential energyin the form of the spring. That potential energy is converted into kinetic energy in the form of the arm rotating forward. The arm pulls on the wound-up string, which turns the drive wheel dowel, which is connected to the wheels, which makes the car drive forward.

## What type of simple machine is a mousetrap?

A mousetrap makes use of a simple machine called a lever. There are three different classes of levers. A first-class lever is like a teeter-totter at the park. The pivot point is called the fulcrum, the person being lifted is the load, and the person on the other end is the effort force.

## How does the mousetrap work?

When the spring mechanism is triggered, a metal bar snaps and kills the rodent. Glue traps often are placed in similar locations as snap traps. After encountering the trap, mice are immobilized by an adhesive surface. Rodents trapped expire from hypothermia since they can’t move and maintain their body temperature.

## 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 do you make a catapult fly farther?

1. Use Bungee Cord Power. Use the tension of bungee cords as opposed to springs to power your catapult.
2. Shoot From the Best Angle. Create an arm break that stops the arm at a 45-degree angle from the floor.
3. Use a Snug Fit.
4. A Sturdy Base Makes a Big Difference.

## How is Newton’s third law used in a mousetrap car?

A car is propelled forward because the drive wheels push on the road and the floor pushes back against the wheels of the car causing the car to move.

## What forces act on your mousetrap car as it moves?

A moving mousetrap car is affected by two type of friction: airfriction and bearing friction. Airfriction is a large factor only with cars that are moving fast and is nearly negligible for slow-moving distance cars; therefore, in this lab you will only take bearing friction into consideration.

## What makes a mousetrap car go farther?

Using large rear wheels allow one rotation of the axle to take the car a much further distance. In other words, a given length of the string from the mousetrap moves the car a greater distance. The last note is to place your mousetrap as close to the front of the car as possible.

## Does a mousetrap have elastic energy?

ELASTIC POTENTIAL ENERGY (EPE). The energy stored in a mousetrap spring is found using the formula : EPE = ½kθ2, where k is spring constant of the mousetrap spring, a measure of how “tough” the spring is and  is the angle (in radians) the torsional mousetrap spring compresses.

## What is the lever on a mousetrap?

A mousetrap car works on the principle of a lever. One end of the lever is connected to a spring. When a force is used to pull up the other end of the lever up, the spring tightens, storing energy. When the lever is released, the stored energy in the spring is transferred back to the lever, and the end snaps back.

## What is the lever arm on a mousetrap?

Changing the length of a mouse trap’s snapper (or lever arm) is how you control a mousetrap vehicle’s acceleration and/or travel distance. Different lengths of lever arms can be used to increase and/or decrease the pulling force and change the amount of string that can be pulled off the drive axle.

## What is the most effective mouse trap?

• Best Glue Trap: Catchmaster Baited Rat, Mouse, and Snake Glue Traps.
• Best Pack: JT Eaton 409BULK Jawz Plastic Mouse Trap.
• Best Jaws: Tomcat Press ‘N Set Mouse Trap.
• Best For Small Mice: Acmind Mouse Trap.
• Best Catch-and-Release Trap: Catcha Two-Piece Humane Smart Mouse Trap.

## How fast do mouse traps work?

Pests like mice and rats can harbor disease, so the sooner you get rid of rodents from your home, the quicker you can safeguard your food, home, and family. Once a rodent nibbles a lethal dose of the bait, they will begin to die within 24 to 48 hours.

## What physics are used in a catapult?

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.

## How does a catapult use Newton’s laws?

They can learn how Newton’s second law of motion works by seeing directly that F = ma; when the metal “arm” of the catapult is pulled back further, thus applying a greater force to the cotton ball, it causes the cotton ball to travel faster and farther.

## How is Newton’s first law applied to catapults?

Newton’s First Law relates to the catapult. When the arm hits the bar, that sets the angle, the force, that makes the arm move, is applied to both arm and bar. The arm moves back and the bar would be pushed forward but the forces holding it in place are greater than the first force.

## 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.

## Which type of catapult throws the farthest?

Catapult Physics – The Onager Because of its design, it allowed for greater throwing distance than the mangonel (comparable to that of a trebuchet).

## What factors affect the accuracy of a catapult?

• Distance from the fulcrum.
• Force behind launch.
• Today’s Objective:
• Weight of the Projectile.
• Angle of Release (pull back)
• pullback = launch time.
• Durability of Construction.
• Accuracy vs. Precision.

## How does inertia affect a mousetrap car?

A mousetrap car cannot move anywhere until the potential energy of the mouse trap’s spring puts energy into the wheels and changes their state of rotation from rest into motion; the more rotational inertia a vehicle has the more energy that will be consumed at the start just to get the vehicle’s wheels turning.

## How do mousetrap cars reduce friction?

Try to have a minimum gap of 1/8 inch between the frame and any spacers (or wheels) in order to decrease any rubbing friction. Use thrust washers and graphite powder between spacers (or wheels) and the frame to help reduce the rubbing friction.

## How does a mousetrap car use Newton’s second law?

Newtons second law of motion will affect our mousetrap car because the more the car weighs the slower it goes. But the less the car weighs the faster it will go because it has less mass so it doesn’t take a big amount of force to move it. – Newtons third law: For every action there is an equal and opposite reaction.

## How does acceleration affect a mousetrap car?

The first advantage is that it prevents slipping of the drive wheel on the ground/floor as the car accelerates. The second advantage is that the car takes longer to gain speed (accelerate) which results in it traveling farther than a car that gains speed faster.