You are holding a thin and weightless bar on your head (see figure 2.1). On the extremity A, the bar is attached to an elastic spring with unstressed length of 1 m ar spring constant, k = 50 N/m; on the other extremity D, the bar is against a wall. On point C, a force F is applied, forming a 45-degree angle with the bar. Assign the length AE according to the height of your body. (a) What is the magnitude of the force F for the bar to rest horizontally? [3 (b) If the force F was removed, what support would you need in D in place of the wall, in order to keep the bar at rest horizontally? Justify your suggestion(s). State and justify your assumptions and comment on your solutions.

You are holding a thin and weightless bar on your head (see figure 2.1). On the extremity A, the bar is attached to an elastic spring with unstressed length of 1 m ar spring constant, k = 50 N/m; on the other extremity D, the bar is against a wall. On point C, a force F is applied, forming a 45-degree angle with the bar. Assign the length AE according to the height of your body. (a) What is the magnitude of the force F for the bar to rest horizontally? [3 (b) If the force F was removed, what support would you need in D in place of the wall, in order to keep the bar at rest horizontally? Justify your suggestion(s). State and justify your assumptions and comment on your solutions.

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

In the figure, a nonuniform bar is suspended at rest in a horizontal position by two massless cords as shown in the figure here. One cord makes the angle 0 = 31.1° with the vertical; the other makes the angle p = 58.9° with the vertical. If the length L of the bar is 5.9 m, compute the distance x from the left end of the bar to its center of mass. L com
А m 1 m 30 сm µc- 5cm rod AB is 1 m long and sits in a joint in A and is located on the pole BC in B. AB operates a linearly varying load with the largest value w = 80 N / m. The post BC weighs m = cm from C the force acts P on the post straight to the right. Decide the largest the force P that can be allowed before the pole starts move about µB = 0.4 and µC = 1. 10 kg, its height is 30 cm, and 5
A 100N load is supported by a strong bar as shown in the figure. The tension in the cable is 200N. Compute the value of angle "A" in degrees. 10 m 200N 100N ZA ZB 10 m
Q4
A rod is attached to a pivot on the wall at one end and suspended horizontally at the other end by a wire as shown in Figure. The wire makes 30° to the rod. The rod has mass M = 2.0 kg and length L-4.0 m. At the end suspended by the wire, an object of mass m - 1.0 kg is hung by a wire. Find the tensin T on the wire that suspends the rod in N. wire R 30° L rod pivot m
Q1
A sign for a pizza restaurant hangs from a 2.60-m long rod extended out from a building. A cable, attached to the building, is attached to the rod at a point that is 2.10 m from the hidge. (See the figure.)The mass of the rod is 5.90 kg. The mass of the sign is 9.40 kg. The angle between the building and the rod is 74.0 degrees. The angle between the cable and the horizontal is 31.0 degrees.What is the torque on the rod due to the weight of the rod alone? [Take the axis to be at the hinge.]
mb: L d- ms A horizontal L=1.2 m long mb=12 kg uniform bar is hinged on the left end and pulled at the right end by a cable. The cable makes 31° angle with horizontal. A 18 kg store sign is suspended below the bar at d=0.18 m from the right end. Find the magnitude of vertical hinge force.
An artist designs a mobile of light horizontal rods connected by vertical strings and supporting various shaped weights (see figure below). Find the magnitudes w₂, W3, and w4 if W1 2.56 units of weight. The numerical values given in the figure all have units of length. W2 = 7.68 W3 = 9.75 W4 = = 10.24 X X units of weight units of weight units of weight 30.0 10.0 W2 30.0 30.0 W3 20.0 10.0 WA
A uniform stone slab weighs 400 lb and is suspended by 3 cables and subjected to a downward vertical load as shown in the figure and parameter table. A B F parameter L1 L2 L3 value units 2 ft 4 ft 3 ft F 150 lb The tension in cable A is 200 * lb The tension in cable Bis 35.7 X lb The tension in cable C'is 314 X lb
Question 4 The round tapered brass bar, in Figure Q4, of length 500 mm is subjected to loads. Determine the change in length if E = 1x10ʻ kg/em². 300kg 500 kg 10 mm 4 700 kg 20 mm 500kg -150- -150 200 mm m m Figure Q4: Bar subjected to various forces
2 B 2