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15 January, 12:17

A jet impinges directly on to a plate that is oriented normal to the axis of the jet. The mass flow rate of the jet is 50 kg/min and its velocity is 200 m/s. Perform a control volume analysis to calculate the force on the plate.

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  1. 15 January, 14:52
    0
    166.67 N

    Explanation:

    Given:

    Mass flow rate = 50 kg/min = 50 kg / 60 seconds = 0.833 kg/s

    Initial velocity = 200 m/s

    after striking the normal board the water will flow in the normal direction, thus the final velocity in the direction of the initial flow will be zero

    therefore,

    Force = (change in momentum)

    or

    Force = Initial momentum - final momentum

    or

    Force = 0.833 * 200 - 0.833 * 0

    or

    Force = 166.67 N
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