A 100-Kg Nonuniform Boom That Is 6

Multiple Choice

A 100-kg nonuniform boom that is 6.0 m long is loosely pinned at the pivot at P.A 600-kg concrete block is suspended from the end of the boom at A,as shown in the figure.The boom forms a 30° angle above the horizontal,and is supported by a 4.0-m cable between points D and B.Point B is 4.0 m from P,and point D is 4.0 m above P.The center of mass of the boom is at point C,which is 2.0 m from P.Assume that all the quantities shown in the figure are accurate to two significant figures.What is the force that the cable connected between points B and D exerts on the boom?

A) 9300 N
B) 8400 N
C) 8100 N
D) 7500 N
E) 6900 N