A circular log floating in water is neutrally buoyant. Our ancestors found that by having half a log with semi-circular cross section and hollowing out the interior, it became stable so that they could use it to migrate across oceans. The reasons for it to become stable are: (i) (ii) (iii) (iv) It lowers the centre of gravity G so that it is below the centre of buoyancy B. It lowers the centre of gravity G so that it is below the metacentre M. It increases the metacentric radius BM. It enables the shifting of the centre of buoyancy B laterally to produce a restoring moment when it is tilted. (A) (B) (C) (D) (i) and (ii) (ii) and (iii) (iii) and (iv) (iv) and (i)
A circular log floating in water is neutrally buoyant. Our ancestors found that by having half a log with semi-circular cross section and hollowing out the interior, it became stable so that they could use it to migrate across oceans. The reasons for it to become stable are: (i) (ii) (iii) (iv) It lowers the centre of gravity G so that it is below the centre of buoyancy B. It lowers the centre of gravity G so that it is below the metacentre M. It increases the metacentric radius BM. It enables the shifting of the centre of buoyancy B laterally to produce a restoring moment when it is tilted. (A) (B) (C) (D) (i) and (ii) (ii) and (iii) (iii) and (iv) (iv) and (i)
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 circular log floating in water is neutrally buoyant. Our ancestors found that by
having half a log with semi-circular cross section and hollowing out the interior,
it became stable so that they could use it to migrate across oceans. The reasons
for it to become stable are:
(i)
(ii)
(iii)
(iv)
It lowers the centre of gravity G so that it is below the centre of buoyancy
B.
It lowers the centre of gravity G so that it is below the metacentre M.
It increases the metacentric radius BM.
It enables the shifting of the centre of buoyancy B laterally to produce a
restoring moment when it is tilted.
(A)
(B)
(C)
(D)
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(iv) and (i)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4997179e-198e-47d6-b5ab-80d1a15b232c%2Fd0ef7ff5-fce0-454b-8caf-e63d17ffe458%2Fwj9g0ns_processed.png&w=3840&q=75)
Transcribed Image Text:A circular log floating in water is neutrally buoyant. Our ancestors found that by
having half a log with semi-circular cross section and hollowing out the interior,
it became stable so that they could use it to migrate across oceans. The reasons
for it to become stable are:
(i)
(ii)
(iii)
(iv)
It lowers the centre of gravity G so that it is below the centre of buoyancy
B.
It lowers the centre of gravity G so that it is below the metacentre M.
It increases the metacentric radius BM.
It enables the shifting of the centre of buoyancy B laterally to produce a
restoring moment when it is tilted.
(A)
(B)
(C)
(D)
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(iv) and (i)
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