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- The board sandwiched between two other boards in Figure P5.97 weighs 95.5 N. If the coefficient of static friction between the boards is 0.663, what must be the magnitude of the compression forces (assumed horizontal) acting on both sides of the center board to keep it from slipping?The board sandwiched between two other boards in Figure P4.91 weighs 95.5 N. If the coefficient of friction between the boards is 0.663, what must be the magnitude of the compression forces (assumed to be horizontal) acting on both sides of the center board to keep it from slipping? Figure P4.91A block resting on a plane inclined at an angle 0 32° from the horizontal is being held in place by steel cables a, b, and cas shown in the figure below. The tension in cable bis 80.0 N. Note that cable ais parallel to the surface of the incline and that cable bis perfectly horizontal. 42° с b a) Create an FBD around point D and determine the tension in wire aand wire C. b) Create an FBD around the block and determine the normal force and the force due to gravity F. c) What is the mass of the block in kilograms?
- A block resting on a plane inclined at an angle e 32° from the horizontal is being held in place by steel cables a, b, and cas shown in the figure below. The tension in cable bis 80.0 N. Note that cable ais parallel to the surface of the incline and that cable bis 42° C perfectly horizontal. a) Create an FBD around point Dand determine the tension in wire a and wire C. b) Create an FBD around the block and determine the normal force Nand the force due to gravity Fg. c) What is the mass of the block in kilograms?What is the tension on the silk fiber?A painter with 80 weight is on a 4 meters long platform. Platform has negligible weight. The painter is balanced by two cables. One is at the left end and the other one is 3.2 meters away from the first cable. a)What is the tension on the left cable and the right cable when the painter is in the middle of the platform b)Would the painter be able to move the right end of the platform without loosing balance. Calculate the tensions on the cables for that case and show that it leads to a negative tension.
- A 159.8-N bird feeder is supported by three cables as shown in the figure below. Find the tension in each cable. left cable N right cable N bottom cable N 60° Bird food 30° ☹The two planks are connected together by cable BC and a smooth spacer DE. Determine the reactions at the smooth supports A and F.and also find the force developed in the cable and spacer. Match the answers. 100 lb 200 lb -2 ft--2 ft- ft2 ft- 182 160 180 1. reaction at A= 168 2. reaction at F = 176 3. Foc- 128 4. FDE 5. 150 120 1405. Determine the force exerted by the cable at B and the reaction at support A for the bar shown. You may assume the bar is massless for the analysis. Write your answers using 3 significant digits. y A 900 N Cable B 22° C 40° 300 mm 250 mm
- 30 1. An object with a weight of20 N is suspended on a string T, with a horizontal force F pulled to the right so that it is in equilibrium, as shown in the diagram. The string makes an angle of 40° with the vertical. 40 30 N Calculate the magnitude of the tension T in the string and the force F. 2. An object of mass 158,85 kg is suspended between two walls by means of two cables T1 andT2 as shown in the sketch below. Tz 90° 30° 158 ,85 kg The angle bctween the cablcs, TI and T2 is 90°. The angle between cable T2 and the horizontal is 30° The net force acting on the object is zero. i. Define a resultant vector. ii, Determine by means of calculations, the magnitude of T1. 3. The diagram below shows an object P suspended from a ceiling with the aid of the light strings X and Y and Z connected at point O. 30 600 a. Draw a closed vector diagram to show ALL the forces acting at point O. b. The mass of object P is 0,25kg. Calculate the magnitude of force X and Y.1. The lateral head and the medial head of the gastrocnemius muscle pull on the Achilles tendon, as shown. The medial head T₁ and lateral head T₂ apply a force of 180 N and 190 N, respectively. y T₁ Gastrocnemius 20° ✔N 30° (a) Calculate the net force experienced by the Achilles tendon. Enter to 3 significant figures Magnitude of net force = T₂ X Achilles Tendon b) What direction is the net force acting on the Achilles tendon? Enter the angle with respect to the y- axis. A negative angle means the force is angled to the left of the y-axis and a positive angle means to the right of the y-axis. Note that T₁ = 180 and T₂ = 190. Enter to 3 significant figures Angle of the net force with respect to y-axis = ✔degreesWhat is the tension of individual cords A,B,C in terms of lamp weight(w)?