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Standard IX

Physics

State of Equilibrium

A liquid flow...

Question

A liquid flows through a tube of uniform cross-section with a constant speed in the direction as shown by the arrows in fig. The liquid exerts on the tube

a net force to the left

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a net force to the right

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an anticlockwise torque

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a clockwise torque

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Solution

The correct option is D a clockwise torque
The forces exerted by the liquid at the bends are shown. (The liquid undergoes change of momentum only at these points, and hence the liquid and tube exert forces on each other.) The two forces form a couple exerting a clockwise torque.

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Similar questions

Q. The tube shown is of non uniform cross section .The cross section area at A is half of the cross section area at B, C and D .A liquid is flowing through in steady state The liquid exerts on the tube:
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Statement IV : Zero net force
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Statement VI : A net counter clockwise torque
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A liquid flows through a tube of uniform cross-section with a constant speed in the direction as shown by the arrows in fig. The liquid exerts on the tube

The correct option is D a clockwise torqueThe forces exerted by the liquid at the bends are shown. (The liquid undergoes change of momentum only at these points, and hence the liquid and tube exert forces on each other.) The two forces form a couple exerting a clockwise torque.

The correct option is D a clockwise torque
The forces exerted by the liquid at the bends are shown. (The liquid undergoes change of momentum only at these points, and hence the liquid and tube exert forces on each other.) The two forces form a couple exerting a clockwise torque.