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A steel tank is to be positioned in an excavation. Knowing that α=20∘, determine by trigonometry (a) the required magnitude of the force P if the resultant R of the two forces applied at A is to be vertical, (b) the corresponding magnitude of R.

Question-Answer › Category: Engineering Mechanics › A steel tank is to be positioned in an excavation. Knowing that α=20∘, determine by trigonometry (a) the required magnitude of the force P if the resultant R of the two forces applied at A is to be vertical, (b) the corresponding magnitude of R.
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S cornwell asked 1 year ago

A steel tank is to be positioned in an excavation. Knowing that α=20∘, determine by trigonometry (a) the required magnitude of the force P if the resultant R of the two forces applied at A is to be vertical, (b) the corresponding magnitude of R.

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Sazid Ahmad answered 1 year ago

 
 

425 lb Draw the free body di agram for the trigonometry of the tank. a-20 425 lb 30° Apply sine rule for the triangle B+50° +60°-180° B 70° a) Apply sine rule for the sides P and angle 60 degrees si des 425 sin 70 sin 60 P 392 1b b) Apply sine rule for the sides R and angle 50 degrees sides 425 sin 70 sin 50 R 346 1b

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