Question

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Given:1.as shown in the figure
2.the length of rods are "r"
3.the three angles between three rods are 120
4.a free hinge on the center of mass(system)
5.the three points mean "m"
6.the distance between the horizontal force and the hinge is "b"

assumption:1.horizontal smooth plane
2.the dimension of each mass is negligible
3.massless rods
find:the angular acceleration of each points(the problem is too hard to do

Answer 1

your fig is unclear...