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Specific force is __________ to cross sectional area.

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+1 vote
in Fluid Mechanics by (118k points)
Specific force is __________ to cross sectional area.

(a) Directly proportional

(b) Inversely proportional

(c) Independent

(d) Not proportional

I had been asked this question in an online quiz.

This intriguing question originated from Specific Force in chapter Non Uniform Flow in Channels of Fluid Mechanics

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Correct answer is (a) Directly proportional

Explanation: Specific force is inversely proportional to the mass flow rate. Specific force is defined as the force that is expressed in terms of it momentum. It is the momentum of flow passing through a channel of cross section per unit time per unit weight and a second is the force per unit weight.

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