Example 2: The 200-kg crate in Figure (a) is suspended using ropes AB and AC. Each rope can withstand a maximum force of 10 kN before it breaks. If AB always remains horizontal, determine the smallest 0 to which the crate can be suspended before one of the ropes breaks.

Problem 1 The 80 lb boy stands on the beam and pulls on the rope with a force of 40 lb. ()D=0.4 and ()D = 0.35 between his shoes and the beam. The beam has a weight of 0.641 lb/in all along it's length. Neglect the thickness of the beam. Also neglect the size of the pulleys (i.e. assume the rope acts at points F & G). a) Is the boy stationary or slipping? b) Determine the beam support reactions at 4 and B. E₂ T 13 12 5 ft E D 1 ft 3 ft -4 ft B

A steel tape having a cross-sectional area of 0.055 cm^2and a modulus of elasticity of 2.1x 10^6 kg/sq. cm, weighs 0.035kg/m. Its length is 30 m when standardized at a pull of 5.5 kg and supported throughout its length. Determine the tension at which the effect of sag will be eliminated by the elongation of the tape due to increased tension. * 19.57 kgs. 19.67 kgs. O 19.37 kgs. O 19.47 kgs. O 19.27 kgs.

Suppose that P= 1500 lb. Determine the force in each member of the cantilevered truss. Express your answer in kilopounds to three significant figures. Enter negative value in the case of compression and positive value in the case of tension.    a) FDE  b) FDF  c) FGF