Water flows steadily through the elbow as shown in the image below. The flow is driven by a pump which generates a very high pressure difference between points 1 and 2. The vertical distance between points 1 and 2 is small. What is the simplest way to approach this problem and still obtain reasonable accuracy, if you wanted to calculate the force at location 1 that is holding the elbow in place?Single choice

Using a form of conservation of momentum that assumes a steady flow and non-uniform velocities at the inlet and outlet, and including both body and surface forces.

Using a form of conservation of momentum that assumes a steady flow and uniform velocities at the inlet and outlet, and including only surface forces.

You would only need to use conservation of mass to solve this problem as the flow is steady.

Using the form of conservation of momentum equation that includes the unsteady term and also including both surface and body forces.