Physics_Lab#5

Physics_Lab#5 - TC Neuhs Physics 11 Lab #5: Rotational...

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TC Neuhs 11/19/07 Physics 11 E. Sabancilar Lab #5: Rotational Inertia Introduction and Theory: The purpose of this lab was to investigate the forces around a fixed rotational axis. We did so by first looking at the components of the wheel and then applying different forces. We can then find the angular acceleration because of Newton’s second law we know that τ =Iα where τ is torque, I is the moment of inertia and α is the angular acceleration. We can then say that the angular acceleration is α = τI in this case a constant torque would produce a constant angular acceleration and therefore allow us to us the kinematic expressions. By using these kinematics we can then say the rotation about a fixed object can be represented by ω = ω o + α t or θ = θ o + ω o t + 12 αt2 where t is the time recorded, θ is the angular displacement and ω is the angular velocity. By applying a torque through a hanging mass we can determine the dependence of angular acceleration on the applied torque. Data and Performance See attached data sheet for raw data. In this lab we were able to calculate the moment of inertia of the wheel assembly by breaking it down into different, less complex pieces. After finding these different pieces we determined their moments of inertia and then put them together to find the total moment of inertia of the wheel assembly. In the second part we applied a torque to the assembly through increasing
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This note was uploaded on 03/27/2008 for the course PHY Physics 11 taught by Professor Gallager during the Spring '08 term at Tufts.

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Physics_Lab#5 - TC Neuhs Physics 11 Lab #5: Rotational...

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