test116_3_plusans

test116_3_plusans - Exam Name MULTIPLE CHOICE Choose the...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) At time t = 0 s, a wheel has an angular displacement of zero radians and an angular velocity of + 28 rad/s. The wheel has a constant acceleration of - 0.50 rad/s 2 . In this situation, the time t , at which the wheel comes to a mandatory halt, is closest to: 1) A) 46 s B) 65 s C) 56 s D) 28 s E) 37 s 2) A turbine blade rotates with angular velocity Ν ( t ) = 2 - 0.6 t 2 . What is the angular acceleration of the blade at t = 9.30 s? 2) A) - 24.9 rad/s 2 B) - 49.9 rad/s 2 C) - 5.58 rad/s 2 D) - 11.2 rad/s 2 E) - 9.16 rad/s 2 Figure 9.1 Point P is on the rim of a wheel of radius 2.0 m. At time t = 0, the wheel is at rest, and P is on the x - axis. The wheel undergoes a uniform angular acceleration of 0.01 rad/s 2 about the center O . 3) In Fig. 9.1, the tangential acceleration of P at time t = 0 s is closest to: 3) A) zero B) 0.005 m/s 2 C) 0.015 m/s 2 D) 0.020 m/s 2 E) 0.010 m/s 2 Table 9.1 4) In Table 9.1, the masses and the coordinates x and y of a set of three point masses in the x - y plane. The masses are interconnected by light struts, forming a rigid body. The moment of inertia of the rigid body, through the center of mass and perpendicular to the

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test116_3_plusans - Exam Name MULTIPLE CHOICE Choose the...

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