Center of Mass
Aim: To find the center of mass of various shapes.
Shapes:
Center of Mass: Towards the middle, a little eastwards. Where all
edges are furthest possible.
Center of Gravity: In the middle of the width of the shape, since it's
symmetrical. Towards the lower part of it vertically.
Center of Mass: Totally symmetrical shape, therefore center of mass is
exactly in the center.
Center of Mass: Furthest possible away from each edge, towards the
middle of the shape.
Conclusion: All the shapes have the center of mass towards the middle.
They all have the center of mass the furthest from each edge as
possible. The shapes that are symmetrical have the center of mass in
the middle, whereas the square shape has it exactly in its center,
since its symmetrical anyway you look at it. The triangle, vertically
symmetrical, also has a center of mass in its middle horizontally,
although not vertically. Vertically its center of mass is nearer to
the bottom, probably making the surface area before and after the
center of mass equal. Since on top its thinner but longer and at the
bottom its wider but lower.
The fact that the center of mass of the object is towards the middle
tells us that the pull of gravity is focused in the middle of the
object. Since the gravity is focused on the center of mass, this means
that all of the forces acting upon the body cancel out. Thus creating
equilibrium, so if you put your thumb in the center of mass of any
shape, the shape is supposed to stay still.
The center of mass of an object depends on its shape. The stability of
an object depends on its center of mass. Therefore the stability is
dependent on shape. If the shape is supported in this point, forces
will balance and give stability to the object. This means that the
center of gravity determines the place where the object reaches
balanced forces, therefore becoming stable.
Evaluation: This experiment is done with very simple equipment, this
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