1. The problem statement, all variables and given/known data Find the time it takes for block A to slide 0.5m on block B. Mass A=10 kg Mass B=35 kg I included a screen shot from my online homework. 2. Relevant equations FR=FNμk 3. The attempt at a solution For Block A: mAa=T-FRA-WAsin(30) T=10a+68.67 For Block B: FRC=(mAg+mBg)μBC FRA=mAgμAB mBa=T+FRC-FRA-WAsin(30)-WBsin(30) After substituting in all my values: 35a=T-196.2 T=35a+196.2 Setting my Tensions equal to each other: 10a+68.67=35a+196.2 magnitude of a=5.1012 Finding time: s-s0=0.5at2+v0t s0=0 v0t=0 0.5=.5(5.1012)t2 t=0.443s Which is wrong... I can't figure out what exactly I'm doing wrong.