*17-68. The device acts as a pop-up barrier to prevent thepassage of a vehicle. It consists of a 100-kg steel plate ACand a 200-kg counterweight solid concrete block located asshown. Determine the moment of inertia of the plate andblock about the hinged axis through A. Neglect the mass ofthe supporting arms AB.Also, determine the initial angularacceleration of the assembly when it is released from rest ate = 45°.0.3 m0.5 m0.5 m1.25 m

Given data as per the question weight of steel plate =100 kg weight of concrete block = 200 kg

Answered: *17-68. The device acts as a pop-up…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The wheel is attached to the spring. The mass of the wheel is m=20 kg. The radius of the wheel is 0.6m. The radius of gyration kG=0.4 m. The spring’s unstretched length is L0=1.0 m. The stiffness coefficient of the spring is k=2.0 N/m. The wheel is released from rest at the state 1 when the angle between the spring and the vertical direction is θ=30°. The wheel rolls without slipping and passes the position at the state 2 when the angle is θ=0°. The spring’s length at the state 2 is L2=4 m. (9) The mass moment of inertial about the IC center is IIC =_________(kg·m2 ) (two decimal places)
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