Recent content by vrc

what do you mean with 'hold' ? grtz

conclusion: constant RPM doens't excist and therefore will be a difference in belt force ? grtz

what about initial acceleration ? if the shaft is rotating at constant RPM, there also will be difference in belt forces... If that isn't true I have a major problem in understanding physics ! grtz

difference in tension I mean: different forces in the belt, if those forces would be equal, why would there be motion... I have learned and understood that there only wille be motion if there's a difference in forces grtz

I assume also that the book might mean that the oppsite force is the one give the belt e preload to there is enough friction with the pulley. Otherwise it wouldn't be able to transmit power. In rotation mode there's a different tension in de belt, that''s rather logic, how would the power be...

someone who wants to confirm my ideas... thank you

for my example, an electromotor is driving the pulley, so where the shaft is connected to the pulley, it's a fixed connections to in this case there's just the shaft reactions that is opposed to the the green force vector, but for deflection calulation/shaft diameter, I must use the green...

oké, a better explenation: we see a pulley with a shaft; it is driving a belt because the shaft has a torque, the power tis transmitted because of a difference in belt force , logic now: suppose I want to calculate the diameter of the shaft, first I have to know the shaft load, I say...

hello, I have some trouble understanding the force vector of a loaded pulley shaft: the pulley is driven by the shaft with a torque T, the pulley on his turn is driving a belt. because of Newton 3th law there's tension in the belt as shown, ok, now the question: many books state that the...

my course state that for a dc source whit the switch closed at t=0: E-L*(di/dt)-Ri=0 Mau I also assume that an ideal conductor has no resistantce,otherwise a voltage would be acrros it! There I didn't saw my fault, because I was thanking about an inductor as a comonent with a resistance...

it's hard to explain my confusing, so I did a little drawing, I wrote most of the way I see it, the blew + pole at the inductor is because the di' will flow to th resistor, so create (it's ofcource created voltage) an electric field Only do I not understand why in the formula for the...

hey, first thank you for you're respons, grateful suppose in my picture the start voltage of de ac source at t= 0 is has a + pole above, so the start currect goes clockwise as I understood: * t=0 the currect is only dependt on the value of R , because the capacitor must charge first...

oké, I'm ghaving a hard time with this one, bt it should be really simple acutally: picture shows RLC circuit: by kirchhoff law we can stat that: +V-R*i(t)-(1/C)*integral(i*dt)-L*(di/dt)=0 I do understand V, R*i(t) and )-(1/C)*integral(i*dt), because those voltage physically...

ow never watch the date, sorry

hey, good topic! and to continue I'd like to get some parts of the book, because I have an examanition coming and want to prepare myself as max as I can I have a mechanical background,so analysis os one big aspect of it,you're review made it look like this must be a grat book for...