Note:
Below is a sample of the objective, theory and discussion (another student work) please change it completely and write it in your own words. For the discussion I attached some figures and results so you can write it according to them.
Objective:
The objective of this experiment is to analyze the rotational motion of a L-shape and pentagon. Moreover, verify if angular momentum was conserved and then use it to calculate the moment of inertia of the pentagon using the parallel axis theorem. The major physics concepts used were center of mass, angular velocity, momentum of angular velocity, conservation of angular momentum and the parallel axis theorem. Center of mass of an object is the average position of all the parts in the system.1 Angular velocity (?) is the time rate at which the object circles around a given axis, its unit is radians per second. Conservation of angular momentum is a law that states when no external torque is applied on an object, the angular momentum doesn’t change, therefore its conserved. Finally, the parallel axis theorem which states a body’s moment of inertia about any axis is equal to the sum of its moment of inertia about a parallel axis through its center of mass and the product of the body’s mass and the square of the perpendicular distance between the two axes.2 This theory was used to calculate the moment of inertia of the pentagon.
Theory:
This report covers the theory of rotational motion of different shapes. The main physics concepts used were center of mass, angular velocity of a rigid object, conservation of angular momentum and parallel axis theorem. Using two different shapes, we verified conservation angular momentum and calculated inertia of one of the shapes by placing the shapes over the table, rotating them, and adding a mass at some point. To conclude, momentum of angular velocity was found to be conserved and moment of inertia of the shape (pentagon) was successfully found using parallel axis theorem.
Discussion:
The estimation of angular momentum was attained as shown in the graphs and tables above, from these tables and figures we could confirm that angular momentum was conserved. Moreover, as we look at the graphs it can be seen that the velocity was semi-constant throughout the experiment up until the mass was dropped and the velocity was lowered afterwards, showing that lowering the velocity helped conserve the energy. During the experiment some errors might have occurred such as imprecise evaluations of the mass or the distance between the camera and the table.
Discussion:
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