How Does Wheel Size and Lever Mechanics Enhance Mousetrap Vehicle Performance?

[adeel]

our physics class has built cars powered by mousetraps. Our car has small wheels in the front and big wheels at the back. (Cd's at front, records at back) It seems to work well. What is the physics behind this? I need to know for the report we have to do.

Also, we have a coat hanger which is attached to the mouse trap. Why is tis important?

 

[Raiden]

I'm not exactly sure the EXACT point of physics in that project, but my best guess would be on air resistance. With a slope on your car given by the wheel size changes, the wind has a route to follow over the car and under it.

Like the wing of an airplane. The wings are in a curved form so that air can go past it easier without having as much force being pushed on them.

And you lost me with the coathanger.

 

[M98Ranger]

The physics behind a mousetrap powered vehicle is based on the principle of potential and kinetic energy. When the mousetrap is set, it stores potential energy in its spring. As the trap is released, the potential energy is converted into kinetic energy, causing the wheels to turn and propel the vehicle forward.

The use of smaller wheels in the front and larger wheels in the back is important for stability and efficiency. The smaller wheels reduce friction and allow for easier movement, while the larger wheels provide more surface area for the vehicle to move forward.

The use of CDs and records as wheels also plays a role in the physics of the vehicle. The smooth surface of the CDs and records reduces friction, allowing for a smoother and more efficient movement.

The coat hanger attached to the mousetrap serves as a lever, increasing the distance between the point of application of force (the mousetrap) and the axis of rotation (the wheels). This results in a greater mechanical advantage, allowing for a stronger and more efficient transfer of energy from the mousetrap to the wheels.

In summary, the physics behind a mousetrap powered vehicle involve potential and kinetic energy, wheel size and surface, and the use of a lever to increase mechanical advantage. These factors work together to create a successful and efficient vehicle.