A uniform,horizontal beam of length 6.0 m and weight 140 N is attached at one end to a wall by a pin connection (so that it may rotate).A cable attached to the wall above the pin supports the opposite end.The cable makes an angle of 60° with the horizontal.What is the tension in the cable needed to maintain the beam in equilibrium?
A) 81 N
B) 69 N
C) 70 N
D) 140 N

Question

Quizplus · Accepted Answer

The tension in the cable is equal to the weight of the beam, which is 140 N.

A Uniform,horizontal Beam of Length 6