A drum can rotate about a fixed-point O. The A block is attached to a cord wrapping around the drum. The mass of the drum is md = 100kg and the radius is r = 0.5 m. The radius of gyration of the drum about point O is ko=0.3 m. The mass of the block is mb= 20kg. The block is released from rest. The acceleration due to gravity g=9.81 m/s2 . (2) ) If the mass moment of inertia of the drum about point O is IO, and the angular acceleration of the drum is α, select the correct moment equation of the whole drum-block system about the point O._____________ A.mbgr=rmb(rα) B.0 C.mbgr=Ioα +rmb(rα) D.mbgr=Ioα A drum can rotate about a fixed-point O. The A block is attached to a cord wrapping aroundthe drum. The mass of the drum is md = 100kg and the radius is r=0.5 m. The radius ofgyration of the drum about point O is ko=0.3 m. The mass of the block is mb- 20kg. Theblock is released from rest. The acceleration due to gravity g=9.81 m/s²(2)) If the mass moment of inertia of the drum about point O is lo, and the angularacceleration of the drum is a, select the correct moment equation of the whole drum-blocksystem about the point O.DrumA%8↓BlockOA.mpgr=rmb(ra)OB. 0OC.mpgr-loa +rmb(ra)O D.mbgr=loa

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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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A drum can rotate about a fixed-point O. The A block is attached to a cord wrapping around the drum. The mass of the drum is m_d= 100kg and the radius is r = 0.5 m. The radius of gyration of the drum about point O is ko=0.3 m. The mass of the block is m_b= 20kg. The block is released from rest. The acceleration due to gravity g=9.81 m/s² .

(2) ) If the mass moment of inertia of the drum about point O is I_O, and the angular acceleration of the drum is α, select the correct moment equation of the whole drum-block system about the point O._____________

A.

m_bgr=rm_b(rα)

B.

0

C.

m_bgr=I_oα +rm_b(rα)

D.

m_bgr=I_oα

A drum can rotate about a fixed-point O. The A block is attached to a cord wrapping around
the drum. The mass of the drum is md = 100kg and the radius is r=0.5 m. The radius of
gyration of the drum about point O is ko=0.3 m. The mass of the block is mb- 20kg. The
block is released from rest. The acceleration due to gravity g=9.81 m/s²
(2)) If the mass moment of inertia of the drum about point O is lo, and the angular
acceleration of the drum is a, select the correct moment equation of the whole drum-block
system about the point O.
Drum
A
%8
↓
Block
OA.mpgr=rmb(ra)
OB. 0
OC.mpgr-loa +rmb(ra)
O D.mbgr=loa

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