1. Do Now: Quiz HW: Problem Set
Aim: How is an object with forces exerted at different angles in equilibrium?
Do Now: Quiz
HW: Problem Set

2. Demo 1 Draw a Free Body Diagram and solve for all forces! 200 g 100 g
Students draw FB, label forces and solve for forces. T1 = T3 and W = T2
Should be T1 = 1N and T2 = 2N, Check when done and say Physics works!

3. Demo 2 Draw a Free Body Diagram and solve for all forces! 200 g 100 g
Draw FB, label forces
Write up = down and left = right. T2y = W = 2N and T2x = T1= 1N
Solve for tension (T2) on top string with Pythagorean theorem. Tan = T2y/T2x for angle. (Vector addition)
***Try to do calculation yourself to avoid wasted time.

4. Summary
1. How do we solve for forces at an angle in any case? 2. How do we solve for that force’s direction?