# Mouse Trap Car Writeup

Topics: Force, Energy, Classical mechanics Pages: 2 (507 words) Published: February 21, 2012
Write Up: MOUSETRAP RACECAR

TOPIC #1: NEWTON’S LAWS
Newton’s Laws consist of three laws that describe motion. The first law states that an object in motion will remain in motion unless acted upon by an unbalanced force, and that an object at rest will remain at rest unless acted upon by an unbalanced force. This law relates to the mousetrap racecar because the racecar moved when an unbalanced force was acted upon it by using the string to pull it forward and the mousetrap racecar stopped because the unbalanced force of friction. The second law states that force equals mass times acceleration. The mousetrap car would not have moved if a force that was unbalanced had not acted upon it. Newton’s third law explains that for every force there is an equal and opposite reaction force. The force of the air is equal to the force of the racecar when it thrusts forward, but the racecar is going in the opposite direction of the air.

TOPIC #2: CONSERVATION OF ENERGY
There are a few different types of energy used when the mousetrap racecar is set off, but energy is never destroyed because of the Law of Conservation of Energy. Before the mousetrap racecar is set off, potential energy is used. Energy is stored in the wrapped up string, and when it is set off the mousetrap now has kinetic energy because it is in motion. Another form of energy that was involved is mechanical energy, which is the sum of all the kinetic and potential energy. Since there was potential and kinetic energy at a higher level than atoms, there was mechanical energy.

TOPIC #3: SIMPLE MACHINES
In my mousetrap racecar the two main simple machines that were used were the lever and wheel and axle. In each wheel there is a wheel and axle, and the lever is what pulls the string forward. There are three different classes of levers, but in my mousetrap racecar a third class lever is used. The mechanical advantage is under one. The lever multiplied force while the wheel and axle...