Question

We have a rod hinged on point A. On this point, there is no restrition for rotation. There is a force F applied on the large side of the bar. The rod has m mass and L height. The distance between point A and the force is 2/3L.

1/3L 2/3L
---------O--------------------------
A F

1) Find the motion equation
2) The theta angle is 30º, dθ/dt is 30º/s and F is F = 4i + 6j. Find the force on A point.

Answer 1

Answer:

I know but I don't think because