Question

Chapter 6, Practice Problem 6/011 XIncorrect The parallelogram linkage is used to transfer crates from platform A to platform B and is hydraulically operated. The oil pressure in the cylinder is programmed to provide a smooth transition of motion from θ 0 to θ θο = π 3 rad given by θ = π/6 1-cos nt 21) where t is in seconds. Determine the magnitude of the orce at Don the pin a ust after the sart of the motion with and t essentially zero and (b) when t-0.61 s. The crate and platform have a combined mass of 153 kg with mass center at G. The mass of each link is small and may be neglected 1385 mmC 885 Answers: (a) Just after the start: D 1500.93 (b) when t = 0.61 s: D-T166738

Answer 1

o to Bad 了 4 /3y The gover ning qushin Congi Xo. 83

rng (-3S14) 1318-32 0-7664FJ 204y5 Fo 1706-55