1. The pasco rotational motion apparatus isused to measure the moment of inertia

Question

1. The pasco rotational motion apparatus isused to measure the moment of inertia for a ring. The step pulleydiameter is 3.60 cm. The innter diameter of the ring is 11.321 cmwhile the other diameter is 13.598 cm. The mass of the ring ismeasured to be 731.2 g. Calculate the moment of inertia. 2. The mass needed to overcome the friction of the axlewith just the platter alone is 10.4 g. The hanging mass used tomeasure the acceleration of the platter is 70.4 g. With thesemasses the resulting velocity vs. time graph is fitted to astraight line which yields the following: (0.0183t - 0.0036) m/s.Determine the acceleration. 3. The mass needed to overcome the friction of the axlewith just the platter and ring is 16.5 g. The hanging massused to measure the acceleration of the platter and ring is 70.4 g.With these masses the resulting velocity vs. time graph is fittedto a straight line which yields the following: (0.0128t - 0.00042)m/s. Determine the acceleration.

Explanation / Answer

1)moment of inertia of the ring=[0.5*m(r2^2-r1^2)]=48742.32 g cm^2 2)v=0.0183t-0.0036 a=dv/dt=0.0183 3)v=0.0128t-0.00042 a=dv/dt=0.0128

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