In a water turbine most (90%-plus) of the kinetic energy contained in a water jet is converted into rotational energy of the turbine. Example, a pelton wheel water turbine that is a cup that turns around a water stream 180 degrees yields very high efficiency because all the momentum change can...
I am trying to understand the basic physics of post-tensioning. Consider the following:
Concrete hollow cylinder, say 5cm in diameter has a hole of diameter 1cm. Put a steel bolt of dia 0.75cm, put a nut at the bottom and top; post-tension it to 10Newtons. I stick this in the ground. Assume...
