Recent content by PaulB

Correction: the motor is powered, but stalled against the wall exerting its stall-torque.

Starting torque of a stalled motor.

Yes, it is attached as a cantilever beam, a distance D away. The strain gauge has been calibrated in this position, so we can ignore the moment caused by D.

Length is 0.3 m, flowrate is 8 mL/minute. How can I calculate the answer?

The tube is completely horizontal. Material is PVC, actual inner diameter is 1 mm. I am just looking for a decent approximation of internal pressure. How can I calculate?

I know the flowrate of the water exiting the tubing. I don't have any knowledge of the florwrate of the water entering the tube. All I know is tube length, diameter, water density and atmospheric conditions. Is it possible to determine internal pressure from this?

I have pump of unknown flowrate pumping water through a tube of length L and diameter D. I know that the flowrate of water exiting the tube is X mL/min. I would like to know the internal pressure of the tubing, how can I calculate it? This all occurs at sea level elevation.

Hi Russ, you are correct. These are better described as spools fixed in space, but free to rotate around the point at the center of the circle. Let's say that they are bearings, sitting on shaft. In the left picture, the tension on T1 will simply be T1-T2. What will the tension on T1 be in the...

I am making a system Where I am pulling on opposite ends of a pulley with Tensions T1 and T2. Is this equivalent to preloading the pulley with tension T2? If I preload the pulley with T2 on a separate rope, how will the angular velocity change when I apply T1? I've drawn a quick diagram