The composite rigid body lies in the vertical plane and consists of the uniform block D an...

The composite rigid body lies in the vertical plane and consists of the uniform block D and the L-shaped bar ABC. The block is rigidly attached to the L-shaped bar, which is uniform. Each segment of the L-shaped bar has length L = 0.75 m and mass mAB = mBC = 2 kg, the mass of the block is mD = 5 kg, and the width and height of the block are h = 0.3 m.

If the system is rotating clockwise with the angular speed ωb = 10 rad/s in the position shown, determine the internal reaction at the rigid joint B on the bar BC of the composite body.

Figure P7.56