boogerscout

Hi again.. I know this can't be that difficult but I am faced with a terrible book and a professor that spends no more than 10 minutes on each chapter. So, here goes.. Again, not looking for an answer, just some ideas on where to start... A 70-kg tightrope walker stands at the midpoint of a 100 m rope. The rope sags 1.5 m. What is it's tension. I know I have to use w=ma to find the weight, and I've tried finding the angle between the 2 segments of rope, but I keep getting goofed up somewhere. Thanks in advance!

Hi all! I'm really stuck on this problem. I have a v vs t graph showing car A at constant acceleration = 0 m/s2 (horizontal line) with a v=8m/s and car B having a constant acceleration of 3m/s2 (found using slope of the line) with average velocity equal to 6m/s (found by (v2-v1)/2). Here's the question: At t=0, both cars are at x=0. Estimate (a) where and when they meet again and (b) their velocities when they meet. 1. I was told that using acceleration I can find x, but I'm thinking I have to do an integral to do this. Is there another way? I was also told this could be solved using a quadratic equation, but I don't understand how. Can anyone give me an idea how to solve this? I don't want the answer (although it may be nice to check my work against), but I would appreciate any input on where to begin.. Thanks in advance.