4. A5 x8-ft sign of uniform density weighs 270lb and is supported by a ball-and-socket joint at A and by two cables. Determine the tension in each cable and the reaction at A. 2ft 2 ft

Question 16 Here is a way we can estimate the distance from the earth to the moon. When the moon is seen at its zenith at a point A on the earth, it is observed to be at the horizon from point B. Points A and B are 6152 miles apart and the radius of the earth is 3960 miles. 20 Earth 0= B a) Calculate the angle in radians. (Round your answer to 5 decimal places.) d= ? v Moon Details b) Estimate the distance from point A to the moon using your angle from part a). (Round your answer to the nearest thousand.) ?

Q2 For the beam section as shown in Fig. Q2, determine the following: a) X, the location of its centroid along x-axis b) Y, the location of its centroid along y-axis