Chapter 5, Problem 45P

The machine shown is used for moving heavy items such as pallets of bricks around construction sites. Determine the force in the single hydraulic cylinder CD (positive if in tension, negative if in compresssion). The mass of the cube of bricks is 1980 kg with mass center at G2. You may neglect the effects of the mass of the forklift components. Assume a = 770 mm, b = 185 mm, c = 500 mm, d = 45 mm, e = 810 mm. a E- D e d Answer: CD = i ! kN

The machine shown is used to help load luggage into airliners. The combined mass of the conveyor and luggage is 110 kg with mass center at G. Determine and plot the force in the hydruaulic cylinder BC (report your answer as a positive value) as a function of over the range 5° 0 ≤ 36°, then answer the questions. Assume DE = 2070 mm, CD = 1280 mm, c = 1680 mm, d = 1130 mm, e = 570 mm, f = 2380 mm. t Questions: E B i D If 0 = 11°, BC = If 0 = 21°, BC = i Over this range, the maximum value for BC = i N N N and occurs when 8 =

30°