An air-standard Diesel cycle has a maximum temperature of 2000 K. At the beginning of compression, p₁ = 95 kPa and T₁ = 300 K. The mass of air is 12 g. For a compression ratio of 15, determine: (a) the net work of the cycle, in kJ. (b) the percent thermal efficiency. (c) the mean effective pressure, in kPa.

Q2. A 40 lbs lamp is suspended by cables as shown. What are the tensions in each of the 4 cables if the coordinate direction angles for Cable B are a = 120°, ß = 145° and y = 73.68°? 1 ft Cable C Ift Cable B 3 ft Cable D 30° 45° Cable A

2.28 Given that T=28.3 kN and W=25 kN, determine the magnitude and sense of the moments about point B of the following: (a) the force T; (b) the force W; and (c) forces T and W combined. T 20 m +16 m. Fig. P2.28 36 m

Problem #1 The inclined pole is subjected to a 5 kN magnitude force vector F acting from point B towards point C. В (1,5, 6) m (a) Determine the angle 0 that exists between the force vector F and the pole AB. F (b) Determine the magnitude of the component of the force vector F that acts parallel to the pole AB. A y (c) Determine the magnitude of the component of the force vector that acts perpendicular to the pole AB. С (4, 3, 0) m (d) If the maximum allowable compressive force (i.e., Parallel Component of F) the pole AB can resist is 8 kN, determine the largest magnitude of the vector F that can be applied at B in the direction shown to satisfy this condition.