Mechanical Energy grade 12: practice

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Grade 12 Mechanical Energy practice question

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Sir, can we use EMi = EMf? The Wnc formula confuses me

phukiemaenetja
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Hey Kev, is the Wnc formula different to the Emi=Emf

LelethuMgoduka
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sir are you allowed to use Wnc with inclines too?

AD-hrxf
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did the question state non conservative

TshianeoRannzwa
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They said "using mechanical energy principles". Doesn't that mean we can only use (Emi = Emf) or no

zuko
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cause I got 5, 6 m.s answering for question 4.1

TshianeoRannzwa