anonymous
  • anonymous
A box weighing 450N is hanging from two chains attached to an overhead beam at andles of 70 degree and 78 degree to the horizontal. determine the tensions in the chains
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
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anonymous
  • anonymous
applying horizontal equilibrium t1cos78=t2cos70----------------------------1 applying vertical t1sin78+t2sin70=450--------------------------2 t1/t2=cos70/cos78 t1/t2=1.645 t1=1.645*t2 put in 2 1.645*t2*sin78+t2*sin70=450 1.6090t2+0.9396t2=450 t2=176.56 t1=1.645*176.56=291.324
anonymous
  • anonymous
T1 cos 70 - T2 cos 78 = 0 (no horizontal force) T1 sin 70 + T2 sin 78 = 450 (weight = total force up) solve 2 equations, two unknowns.

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