1. The problem statement, all variables and given/known data http://postimg.org/image/uc0c581cb/ For (b), how many points of linearly independent motion are present in this system? 2. Relevant equations 3. The attempt at a solution The solution says there is rotation of J1, between K1 and D1, to the right of K2 and finally J3 But isn't there also rotation for J2?