Problem statements
Solution video – H21.A
Solution video – H21.B
Reminder: Please submit HW21.B. No credit will be given for submitting the wrong homework assignment.
Hint: θ equals tan^-1(h/b).
DISCUSSION THREAD
Please post questions here on the homework, and take time to answer questions posted by others. You can learn both ways.
Are we meant to solve everything in terms of theta? Do theta terms all cancel out by the end?
You will end up with theta terms included in final answers. But those theta terms will not “cancel out”/”disappear”, you can substitute theta in terms of h and b.
I will update the problem post here.
I still don’t understand why the angle of the slope of the roller MUST be equal to the same angle inside of the triangles inside the structure. Where was this figured out from?