Can yo help me to answer my ignment? I found it really difficult. Please help me. I'm just a newbie here.ty?

I don't know the answers myself, but you might check out this site see if it helps at all: a href="http://www.tutorvista.com/search/spring-balance." rel="nofollow"http://www.tutorvista.com/search/spring-…/a Hope it helps, good luck. Di