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A man is rowing a boat with a constant velocity ' V_{0}' in a

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A man is rowing a boat with a constant velocity ' $V_{0}$ ' in a river the contact area of the boat is 'A' and coefficient of viscosity in $η$ . The depth of the river is D. Find the force required to row the boat

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A man is rowing a boat with a constant velocity '

V_{0}

' in a river the contact area of the boat is 'A' and coefficient of viscosity in

η

. The depth of the river is D. Find the force required to row the boat

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Text solutionVerified

F - F_{T} = m a_{res}

As boat moves with constant velocity

a_{res} = 0

F = F_{T}

But

F_{T} = η A \frac{d v}{d z}, b u t \frac{d v}{d z} = \frac{V _{0} - 0}{D} = \frac{V _{0}}{D}

then

F = F_{1} = \frac{η A v _{0}}{D}

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Question Text	A man is rowing a boat with a constant velocity ' $V_{0}$ ' in a river the contact area of the boat is 'A' and coefficient of viscosity in $η$ . The depth of the river is D. Find the force required to row the boat
Answer Type	Text solution:1
Upvotes	150