HW 10AItem 4 Item 4 Submit My Answers Give Up A textbook of mass 2.10 kg rests o
ID: 1785853 • Letter: H
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HW 10AItem 4 Item 4 Submit My Answers Give Up A textbook of mass 2.10 kg rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.190 m to a hanging book with mass 2.96 kg. The system is released from rest, and the books are observed to move a distance 1.30 m over a time interval of 0.790s Correct 72 m2(g-a1) = 16.7N Part C You may want to review (L.pages 306-309) For related may want to view a Video Tutor Solution of An What is the moment of inertia of the pulley about its rotation axis? Take the free fall acceleration to be g = 9.80 m/s g tips and strategies, you 0.007 SubmitMy Answers Give Up Incorrect; Try Again; 3 attempts remaining kg m2 Provide FeeExplanation / Answer
Applying d = v0 t + a t^2 / 2
1.30 = 0 + a (0.790^2) / 2
a = 4.17 m/s^2
on Book :
2.96g - T1 = 2.96 a
T1 = (2.96)(9.81 - 4.17) = 16.71 N
on textbook:
T2 = 2.10 x 4.17 = 8.76 N
Net torque = I alpha
R (T1 - T2) = I (a / R)
I = (16.71 - 8.76) (0.190/2)^2 / 4.17
I = 0.0172 Kg m^2 .............Ans
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