A uniform beam of length L = 3 meters and mass M = 150 kg has a block of mass m = 300 kg and negligible size firmly attached to one end as shown below. The beam is attached by a hinge to the wall and extends perpendicularly from the wall. It is braced with a rope attached some distance away, which makes an angle θ = 30° with respect to the beam.

What is the tension T in the rope?

The rope is cut. What is the magnitude |α| of the angular acceleration of the beam and block immediately after the rope is cut?

Question

A uniform beam of length L = 3 meters and mass M = 150 kg has a block of mass m = 300 kg and negligible size firmly attached to one end as shown below. The beam is attached by a hinge to the wall and extends perpendicularly from the wall. It is braced with a rope attached some distance away, which makes an angle θ = 30° with respect to the beam.


What is the tension T in the rope?


The rope is cut. What is the magnitude |α| of the angular acceleration of the beam and block immediately after the rope is cut?

noelgreco · Answer

"...firmly attached to one end as shown below."

Need the drawing