MasteringPhysics: 11/3 static equilibrium Secure https://session.masteringphysic
ID: 1774783 • Letter: M
Question
MasteringPhysics: 11/3 static equilibrium Secure https://session.masteringphysics.com/myct/itemView?offset-next&assignmentProblemID-87497407; 11/3 static equilibriumProblem 9.19 Resources # « previous | 4 of 4 | retum to assignment Determine the tension in the horizontal massless cable CD Problem 9.19 Express your answer to two significant figures and include the appropriate units A traffic light hangs from a pole as shown in (Figure 1) The uniform aluminum pole AB is 7.30 m long and has a mass of 13.0 kg. The mass of the traffic light is 20.5 kg FTValue Units Submit My Answers Give Up Part B Determine the vertical component of the force exerted by the pivot A on the aluminum pole Express your answer to two significant figures and include the ap positive value if the force is propriate units. Enter ward upward and negative value if the force is down Figure 1 #1 of 1 PyValueUnits 37° 3.80 m Submit My Answers Give Up Part C Determine the horizontal component of the force exerted by the pivot A on the aluminum pole propriate units. Enter Express your answer to two significant figures and include the ap positive value if the direction of the force is to the right and negative value if the direction of the force is to the left.Explanation / Answer
a) l = 3.8 / sin 37 = 6.314 m
sigma T = 0
T * sin 37 * 6.314 - (20.5 * 9.8 * cos 53 * 7.3) - (13 * 9.8 * cos 53 * (7.3/2)) = 0
Tension T = 306 N
b) vertical component , sigma Fx = 0
Fx = T = 306 N
c) horizontal component, sigma Fy = 0
Fy = (M + m) * g = (13 + 20.5) * 9.8
= 328.3 N