# Angular Motion and Newton's Second Law

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At t=0, a wheel rotating about a fixed axis at a constant angular acceleration has an angular velocity of 2 rad/s. Two seconds later it has turned 5 complete revolutions. What is the angular acceleration of this wheel?

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Answer:

a) 17 rad/s^2

b) 14 rad/s^2

c) 20 rad/s^2

d) 23 rad/s^2

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A 9.00 kg hanging weight is connected to a string over a pulley to a 5.00 kg block that is sliding on a flat table. If the coefficient of kinetic friction is 0.15, find the tension in the string.

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Answer:

a) 28.3 N

b) 36.2 N

c) 40.4 N

d) 53.4 N

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OTA: Please take this problem only if you can show step by step problem solving and equations used. Thank you.

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