Recent content by cres222

Now i understand , thank you very much for you kindly help,I'm very appreciative

so: \Delta y=(center of mass level-reference level) not the other way around , am i correct?

P.E=0 at the vertical position (\alpha=0 from the vertical line in the picture above), now which formula should i use : P.E=mgl_{p}(1-cos\alpha) or P.E=mgl_{p}(cos\alpha-1)

hello every one i have this pendulum: i need to stabilize the pendulum in the inverted position , i need to know the potential energy for the pendulum , i read several articles in each one i have a different equation : V=mgl_{p}cos\alpha V=-mgl_{p}cos\alpha V=mgl_{p}(1-cos\alpha)...