Problem statementSolution video |

**DISCUSSION THREAD**

Any questions??

**Discussion**

**FOUR-STEP PLAN**

* Step 1: FBD* - Draw a free body diagram of A+B+bar.

* Step 2: Work/energy* - Write down the individual KE and PE for A and B. Add together these to find the total KE and PE for the system.

* Step 3: Kinematics* - Consider the location of the instant center for link AB for the position of interest where AB is horizontal. What does this say about the velocity of B at that position?

* Step 4: Solve *- Combine your equations from Steps 2 and 3 to solve for the speeds of A and B.