Lab Fluid 5

Graph for Hemispherical Plate

log F vs log V 1

0.8

0.6

log F

0.4

0.2

0 0.894

0.892

0.74

0.672

0.655

-0.2

-0.4

log V theoritical

measured

0.608

0.562

0.472

The experiment was done successfully, even though the data collected were a little bit difference compared tothe theoretical values. These variations are due to human and servicing factors such as parallax error. Moreover,dirty water container may create error. Additionally, error may be introduced due to stop watch use andviscosity effects. In order to reduce the differences between the theoretical and experimental value of forces,some recommendations may be taken. The position of the observ er’s eye must be 90° perpendicular to the focusing object. It is necessary to ensure that the apparatus functioning perfectly in order to get an accurateresult. It is necessary to ensure constant water supply of pump. The time should be measured very carefullywith the help of stop watch. It is necessary to ensure that no bubble is present in the water. The jet must impingeat the center of the vane. The flow rate must be measured very carefully. It is necessary to record the weightsvery carefully

Higher water jet velocity will produce a higher force exerted ontothe target vane. The amount of weight can be supported indicate theforce exerted by the jet