4. Validate
- Put your validation video here. Label it as your first validation.
- Explain ONE change you made to your original and write your validation here.
First Validation
One change we made is to remove the clipper so we can add more popsicle sticks underneath and raise our base - the base will support the arm. Additionally, we also add some extra rubber bands to force the arm to fire the marshmallow in the right direction.
My validation:
Which forces are present?
In this catapult, there are potential energy, kinetic energy, force and motion. Potential energy is presented when we press the clipper dow because it's storing energy but it's not moving yet. Kinetic energy is presented when we relased the clipper since that's when it will use the energy it has. The force is our fingers and the arm puts the marshmallow into motion when exposed with force.
What will it do?
The spoon or the arm of the catapult will catapult a marshmallow over a chair from two squares away and land ranging from the chair and the target line. In order to do this, we will press down the upper part of the clipper and release it.
Why will it work?
It will work because when we press down the upper part of the clipper, we are presenting potential energy. The spoon is having potential energy and as soon as we release it, it will put the marshmallow in motion. Our group also have some rubber bands to hold the end of the spoon so when it's presented with kinetic energy, it won't run around crazily.
Why did you choose this design?
I chose this design because we feel like it's the simplest model we can possibly think of, it's easy to control, and we can apply rubber bands and clippers, which are the two most important materials to construct the catapult.
My validation:
Which forces are present?
In this catapult, there are potential energy, kinetic energy, force and motion. Potential energy is presented when we press the clipper dow because it's storing energy but it's not moving yet. Kinetic energy is presented when we relased the clipper since that's when it will use the energy it has. The force is our fingers and the arm puts the marshmallow into motion when exposed with force.
What will it do?
The spoon or the arm of the catapult will catapult a marshmallow over a chair from two squares away and land ranging from the chair and the target line. In order to do this, we will press down the upper part of the clipper and release it.
Why will it work?
It will work because when we press down the upper part of the clipper, we are presenting potential energy. The spoon is having potential energy and as soon as we release it, it will put the marshmallow in motion. Our group also have some rubber bands to hold the end of the spoon so when it's presented with kinetic energy, it won't run around crazily.
Why did you choose this design?
I chose this design because we feel like it's the simplest model we can possibly think of, it's easy to control, and we can apply rubber bands and clippers, which are the two most important materials to construct the catapult.