Physics Post 11

For this physics post I will be explaining the picture I took of my pencil on a somewhat frictionless surface. This relates to our lab last week because we were measuring how fast our cart would go according to the hanging weight, not friction. Therefore we had to remove friction from our experiment. We did this by using a nearly frictionless cart and track set that would accurately display how fast the hanging weight would make the cart accelerate. My somewhat frictionless surface is the cover of my binder. Since it is plastic, and my pencil does not stick to it, it creates an imitation of a frictionless surface. Because it is somewhat frictionless, my pencil should not stop rolling once I apply force to it. This is true except for the fact that the clip on my pencil would impede a rolling motion since it acts like a speed bump whenever the pencil rolls over it.

Physics Post 10

For this physics post I will be explaining the picture I took of my lanyard attached to my glasses case which represents what happens in a pulley system. Although I do not have a pulley, the main forces that are involved in a pulley system are still at work. The main forces here are friction and gravity. The force that the mass of the I.D. in the lanyard and the pull of gravity make is not enough to overcome the friction between the glasses case and the bed surface. If the situation was reversed, and the glasses case was the one that was hanging, there would be more than enough force to pull the I.D. off of the bed since the glasses case weighs much more than the I.D.

Physics Post 9

For this post I will be explaining a picture I took of me pulling my planner out from under my glasses case. In theory, if I pulled the planner at a fast enough velocity, it should come out from under the glasses case without displacing the glasses case. But in actuality, there are several factors which will prevent this from happening. One factor is the glasses case itself. It is not very balanced since the cleaning cloth makes it slightly heavier on one side. Another factor is the bed that this is occurring on. The bed is not a completely flat surface. Therefore, the energy that has to be applied on the planner in order to not affect the glasses case's inertia will be slightly different in terms of magnitude and direction. If this were to be occurring on something flat, like a desk, and I removed the glasses and cleaning cloth from the glasses case, then this experiment would run smoother.

Physics Post 8

For this physics post I will be explaining the picture I took of me shaking a pen. You could say that I am shaking this pen fast. But relative to what? I could be shaking the pen fast relative to a gorilla shaking a banana tree. You could also say that I am shaking this pen slow. But again, relative to what? I could be shaking the pen slow relative to a bomb shaking the molecules in the air. This can all be considered true because everything in the world is relative to something else. You could say a sloth was really fast. Relative to the speed of the growth of the tree it's climbing on. You could also say the speed of sound is slow. Relative to the speed of light.

Physics Post 7

For this post I will be explaining a picture that I took of me flicking a paper clip off the edge of my bed. This demonstrates how axes are independent because as I flick the paper clip horizontally, it will constantly go that speed on the x-axis while accelerating -9.8 meters per second from gravity on the y-axis. If I had changed the angle of my flick to aim slightly upwards, then by calculating the x and y vectors of the diagonal, I could find the initial velocity of the x and y. If you were to solve for the final velocities of the x and y, you would find that the x-velocity would have remained constant and the y-velocity would have been accelerated from gravity.