my explanation 4 second part wud be.. in stream lined flow u consider inside the pipe the curved cylinder par lik uve drawn(something lik an L shaped joint) ,water flowin thru/unit time shud be same(i think) now the outer layers of water have to cover a larger dist.. so outer vel will be greater but i fail to understand how u can account wid radial acc...tht is basically perp to the flow n is countered by normal force due to wall of pipe..so how exactly does tht affect flow vel??
Moderation Team
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