A 50 kg traffic light is suspended by two inelas-tic (not elastic) 21 m cables which have a mass of1.2 kg per meter of length. The cable is such thatbefore the traffic light is added/hanged, the hori-zontal distance from the lowest point of the cableto the end point (s) is/are 20 m. The weight of thetraffic light leads to deflection such that positionA changes as soon the the weight of the light isadded.Answer the following:(a) The above is catenary, explain why?20 m20 m(b) Determine the vertical deflection ô of thelowest point A relative to its position beforethe signal is added.B(e) Show that the force at lowest point A actshorizontal when the traffic light weight iszero (N/B: before the weight acts on the ca-ble).50 kg

Answered: Image /qna-images/answer/4ad3a417-a1c4-4690-8309-4dd6d715def2.jpg

Answered: A 50 kg traffic light is suspended by…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Question 2) The figure shows a mechanical model of the Russel fracture traction device and the leg. The leg is held in balance in the position indicated by the two weights attached to the two cables. The combined weight of the leg and the cast is W=210 N. The horizontal distance between points A and B where the cables are attached to the leg is L=100 cm and the vertical distance is d=6 cm. Point C is the center of gravity of the cast and leg at three quarters of the L measured from point A (3L/4= 75 cm). The angle that cable 2 makes with the horizontal is measured as β=33°. Accordingly, in order for the leg to remain in balance in the shown position; a) Find the tensile force T1 in cable 1. (Write your result in N) b) Find the tensile force T2 in cable 2. (Write your result in N) c) Find the angle α of cable 1 with the horizontal. Response
A 4.2‑kg brown hare walks on a horizontal beam (the beam's mass m = 2.8 kg and length a = 2.4 m). The beam is suspended with two ropes attached to the ends of the beam. What should be the distance between the hare and the left end of the beam so that the tension in the left rope is three times as big as the tension in the right rope? 1. The distance from the left end, b = If the hare is at the distance found in the previous question, calculate the tension in each rope. 2. The tension in the left rope, T1 = 3. The tension in the right rope, T2 = ------------------------------------------------------------------ A bike wheel has a radius of R = 0.62 m and a mass of m = 2.6 kg spins at 270 rpm. What is the angular momentum of the wheel? Assume that the wheel has a shape of a ring. The angular momentum of the wheel, L ? A typical bowling ball might have a mass of 7 kg and a radius of 12 cm. How fast the ball should spin to have the same angular momentum as the wheel from the…
Time left 0:38:07 on 1 The moment exerted about point E by the weight is 900 N.m. The moment which the weight exerted about et ered point S is ed out of g question 40 cm 60° 60 50 сm
You and your team are conducting a restoration project at an old city hall to investigatethe condition of the old chandelier at the main hall. The chandelier was estimated toweigh 4800 N and supported by three cables as shown in Figure 1. The project requiresyou to investigate the condition of the cables holding the chandelier after many years.Given the diameter of cable B is 6mm, while diameter of cable C is 1.25 times and cableA is 1.5 times of cable B, analyze the stress condition of the cables and propose a suitableinclination of the cable B to maintain the normal stress in cable C to be 0.5 times thanthe normal stress of cable B in order for the cable to support the chandelier
A block sits on a plane, and there is friction between the block and the plane. The plane is accelerated to the right. If the block remains at the same position on the plane, which of the following pictures might show the free-body diagram for the block? (All of the vectors shown are forces.) N (zero force) Fi та та mg mg mg mg
The mechanism forms a structure, when the number of degrees of freedom (W) is equal to
A gymnast holds a steady handstand on the top of the uneven bars as shown. ITNEASTICS a. As long as the gymnast grasps the bar and holds this position, how many degrees of freedom are represented by this system? (explain) b. The 2.5 m bar has a 3.5 cm diameter, a linear density of u = 8 kg/m and a modulus of Elasticity of E = 8000 MPa, and the gymnast has a mass of 45 kg. What is the static deflection of the midpoint of the bar? c. What is the dynamic equation for the vertical motion of the bar about the static equilibrium point as the gymnast holds this position? d. What is the characteristic equation and natural frequency of the motion?
The figure shows a mechanical model of the Russel fracture traction device and the leg. The leg is held in balance in the position indicated by the two weights attached to the two cables. The total weight of the leg and the cast is W=200 N. The horizontal distance between points A and B where the cables are attached to the leg is L=100 cm and the vertical distance is d=10 cm . Point C is the center of gravity of the cast and leg at three quarters of the L measured from point A ( 3L/4= 75 cm) . The angle that cable 2 makes with the horizontal is measured as β=40 ° . Accordingly, in order for the leg to remain in balance in the position shown; a) Find the tensile force T 1 in cable 1 . (Write your result in N ) b) Find the tensile force T 2 in cable 2 . (Write your result in N ) c) Find the angle α of cable 1 with the horizontal
3) A point mass is attached to one end of a beam levered against a spike which acts as the pivot. The point mass weighs 250N and the beam has a uniform mass of 10kg and is 8m long. Parts a and b Part c Fapplied 3 of 6mov 1m 8m Krist 0 = 60° Scale 250 N Scale a. If a scale placed beneath the point mass reads 250N, what is the magnitude and direction for the force at the pivot point? Direction: North, 90° from x-axis Magnitude to k* 250N = 2500 N b. For the same scenario, how far must the pivot point be located relative to the left edge of the beam? (Hint, both the boxes weight and the force from the scale act at the farthest right edge of the beam.) www.acta 0672nos onl c. The pivot is then moved to be 6m from the left edge of the beam which now makes a 60 angle with the floor. How much downward force would be needed at the left-most edge of the beam to reduce the reading on the scale to zero? (Hint: the beam is still in static eq. when the scale reads zero.)
HYDRAULICS & ELECTRO-HYDRAULICS The Diameters of a small piston and a large piston of a hydraulic jack are 5 cm ad 10 cm respectively. A force of 80 KN is applied on the small piston. Find the load lifted by the large piston when the pistons are at the same level.
D 3 m 2 m A 4 m B E AB F(AB)=Dtension force in AB АВ F = F(AD)=tension force in AD AD %3D F = F(AC)=tension force in AC AC Weight of the flowerpot is 40 Newton. W=weight of the flowerpot Express the tension force in AC as a vector form.
Homework: 1. Draw the free-body diagram of each object. S00N s00 N 2 m 3m (a) (d) 600 N- m -2m 200 N /m (b) (e) 400 N/m 30 400 N B. 3m m- 2 m (c) (f)

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS