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Rotational Dynamics About a Fixed Axis: in the Figure, a Mass

question 9

Multiple Choice

Rotational dynamics about a fixed axis: In the figure, a mass of 31.77 kg is attached to a light string that is wrapped around a cylindrical spool of radius 10.0 cm and moment of inertia 4.00 kg · m2. The spool is suspended from the ceiling, and the mass is then released from rest a distance 5.70 m above the floor. How long does it take to reach the floor? Rotational dynamics about a fixed axis: In the figure, a mass of 31.77 kg is attached to a light string that is wrapped around a cylindrical spool of radius 10.0 cm and moment of inertia 4.00 kg · m<sup>2</sup>. The spool is suspended from the ceiling, and the mass is then released from rest a distance 5.70 m above the floor. How long does it take to reach the floor?   A)  3.98 s B)  3.83 s C)  1.14 s D)  5.59 s E)  7.89 s


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