*17-68. The device acts as a pop-up barrier to prevent the passage of a vehicle. It consists of a 100-kg steel plate AC and a 200-kg counterweight solid concrete block located as shown. Determine the moment of inertia of the plate and block about the hinged axis through A. Neglect the mass of the supporting arms AB.Also, determine the initial angular acceleration of the assembly when it is released from rest at e = 45°. 0.3 m 0.5 m 0.5 m 1.25 m

*17-68. The device acts as a pop-up barrier to prevent the passage of a vehicle. It consists of a 100-kg steel plate AC and a 200-kg counterweight solid concrete block located as shown. Determine the moment of inertia of the plate and block about the hinged axis through A. Neglect the mass of the supporting arms AB.Also, determine the initial angular acceleration of the assembly when it is released from rest at e = 45°. 0.3 m 0.5 m 0.5 m 1.25 m

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.26P: The uniform plank is initially at rest on the fixed support at A and the stationary drum at B. If...

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