The structure shown below is a simplified tower crane. It carries a shipping crate suspended from B that has a weight of
Posted: Mon May 16, 2022 6:21 am
- The Structure Shown Below Is A Simplified Tower Crane It Carries A Shipping Crate Suspended From B That Has A Weight Of 1 (161.12 KiB) Viewed 64 times
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The structure shown below is a simplified tower crane. It carries a shipping crate suspended from B that has a weight of 93 KN The main jib DCB (in green) has a weight of 26 kN concentrated in the center of the beam. This is pinned to the main body at D and is supported by a cable that is routed through pulleys at F and G and is attached to a concrete counterweight J The main body AEFG (in yellow) is fixed to the ground at A. F h3 G 07 E h2 D C B J 11 1₂ 13
12 D C B 11 12 13 11 А
Call Ne Item 2 Various geometry h = 28.3 m h2=3.3 m hs =5.1 m 1 = 13 m 1 =158 m 1 = 3.5 m =55.9 degrees al Assumptions: • The main body AEFG can be considered massless. • The cable CFGJ is massless. • The pulleys at F and G can be considered massless, frictionless, and of negligible diameter All bodies are considered rigid i. Determine the weight of counterweight J in order for the main jib DCB to be horizontal. it. Determine the magnitude of the sand y components of force at pin D. iti. Determine the reactions at fixed support A. Part A- Part A Determine the weight of counterweight J in order for the main jib DCB to be horizontal. Enter your answer in units of kN to three significant figures. ΤΕΙ ΑΣΦ11 vec ? W, = 304 KN