Engineering mechanics question about weight/cables/pulleys

AI Thread Summary
The discussion centers on solving a mechanics problem involving three cables and two boxes, focusing on static equilibrium principles. The user seeks assistance in determining the mass of box K to achieve a 25-degree angle, calculating the reaction forces at supports G and N, and finding the appropriate cable diameter given a tensile strength of 20 MPa. Key concepts include understanding static equilibrium and applying relevant equations to solve for unknowns. The user expresses frustration over forgetting how to approach these types of problems, indicating a need for a refresher on the fundamental principles involved. Clear guidance on these calculations is requested to alleviate stress and regain confidence.
bobmarly12345
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Homework Statement


An assembly shown in the picture, GH , HK, HNL are three cables. the mass of box L IS 64Kg,
a) determine the mass of box K in order to make angle theta as 25 degrees
b) determine the reaction forces at supports G and N
c) calculate required cable diameter when tensile strength of the cable is 20MPaI can't seem to do these questions and its stressing me out because i could do it before but I've totally forgotten how to now. any help would be more than great!

Homework Equations


The Attempt at a Solution

 

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First identify which principles will be involved. In this case, static equilibrium. What do you know about equilibrium that might apply in this case? What other principles might be involved?
 

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