A horizontal axisymmetric jet of air with 1.25 cm diameter strikes a stationary vertical disk a 20 cm disk. The jet speed is 70 m/s at the nozzle exit. A manometer is connected to the center of the disk. Calculate (a) the deflection h, if the manometer liquid has SG

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Answer form flower;

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j