The problem involves calculating the normal force exerted on a flat plate inclined at an angle due to a jet of water striking it. The jet has a velocity of 50 m/s and is inclined at 30 degrees to the plate.
Participants are exploring the implications of the angle of inclination and its effect on the calculation of the normal force. Some guidance has been offered regarding the interpretation of the angle, but there is no explicit consensus on the correct approach yet.
There is some confusion regarding the definitions of angles in the context of the problem, particularly whether the 30-degree angle is measured from the horizontal or vertical. This ambiguity may impact the calculations being discussed.
It doesn't matter. It is only asking about the force resulting from the deflection of the stream of water. Which way gravity acts is of no consequence.foo9008 said:
My ans would be different, the formula given is rho(A)(v^2)cos theta , where theta is the velocity normal to the plate , if the angle 30 is from horizontal axis, then my theta would be 60, am I right??haruspex said:
Oh, you only meant vertical and horizontal with respect to the way you drew the diagram.foo9008 said:
So my idea that theta=60 is correct?haruspex said:
As in your second attachment, yes.foo9008 said:
![DSC_0596[1].JPG](/data/attachments/81/81740-5075c480004c1695a24a7440c90b5887.jpg?hash=UHXEgABMFp)
