Need help with a conclusion for this lab please. I had a 2.32% difference betwee

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Need help with a conclusion for this lab please. I had a 2.32% difference between theoretical and experimental inertia values and a 9.98% error. Need help with a conclusion for this lab please. I had a 2.32% difference between theoretical and experimental inertia values and a 9.98% error. INTRODUCTION The rotational inertia (also called "moment of inertia" in some books) of a body about an 8-2 measure of how difficult it is to make it angularly accelerate about that More specifically, the larger the rotational inertia, the more torque we will have to apply to obtain the same angular acceleration. Rotational inertia is to t acceleration what inertia (or mass) is to force and acceleration. orque and angular We can determine the rotational inertia of a body experimentally by applying a known torque and measuring the resulting angular acceleration. It can also be shown, however, that the rotational inertia is completely determined by the way the body's mass is distributed around the axis of rotation. Thus, we can also calculate the rotational inertia of a body from its dimensions and its mass. In this experiment you will test the relationship between torque and angular acceleration, determine the rotational inertia of a body from that relationship, and compare it toa theoretical formula based on the mass distribution of the body THEORY (You should refer to your textbook for important assumed background for this experiment.) Part A: Finding the Rotational Inertia Experimentally A "wheel" (composed of several "disks sharing the same axis like that shown in Figure 8-la) is supported by pivot points that allow it to rotate about the horizontal axis of symmetry. A string wrapped around one of the disks is attached to a cup (or weight holder) of mass M, to which additional mass M, may be added as shown in Figure&-1b b. A, t ) M,+M)g FIGURE 8-1. a) The rotating wheel and its dimensions. b) A free body diagram of the hanging cup. Rotational Dynamics

Explanation / Answer

As for as this question is concern, you should understand that theoritical derivations are made initially with some assumptions after that we supply all known (Already been calculate) values to the formula and getting the answer.

On the other hand while doing the same problem practically it is quite natural to arise some errors as you know various causes of errors such as , human, machine,environment, and others which plays a crucial role leads to difference in values obtained from theory and practical. So, you need not worry about the % of error, if your answer is close to the already calculated values.

This arises because of the fact that the quality of machineries and tools and skill used by research laboratories are entirely different from our environment. Hope you are convinced. So, feel free as you achieved 90% of the accepted value.

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