FlyVirgin744 From United States of America, joined Jul 1999, 1313 posts, RR: 1 Posted (12 years 4 months 5 days 12 hours ago) and read 2077 times:
Hey guys, I've been stuck on this problem for awhile. Maybe someone can help me.
Figure 11-43 shows two blocks, each of mass m = 3.2 kg, suspended from the ends of a rigid massless rod of length L1 + L2, with L1 = 0.20 m and L2 = 1.8 m. The rod is held horizontally on the fulcrum and then released. What are the magnitudes of the initial accelerations of (a) the block closer to the fulcrum and (b) the other block?
Now the answer to this situation is
0.956 m/s^2 and 8.60 m/s^2. But next time I do it I will get new numbers.
Can anyone help?
Sometimes I go about in pity for myself and all the while a great wind carries me across the sky.
JetService From United States of America, joined Feb 2000, 4798 posts, RR: 11
Reply 8, posted (12 years 4 months 5 days 10 hours ago) and read 2021 times:
Flight152, I was going to see if someone else could help first. I hate to be a know-it-all, but after seeing the responses, I guess I have to.
FlyVirgin's first problem is his polyfractals are all askew. He doesn't realize (as most of the population, except me) that whenever you have two opposing unilinial lengths on a reflective plane, it immediately puts the fulcrum in an opposing mass state. This basically inverts your polyfractals incrementally, thus skewing them. To compensate when calculating the overall static basis, all you have to do is place your variables (L) in the same matrix as the subvortex. Otherwise you end up with a coefficient leak. And everyone know that a coefficient leak, while durinominal, is only a raw element in a saturated array. Hope that helps.