Multiple Choice Questoins. Click on the correct answer.
Problem 16
16. The strength of a rectangular beam varies jointly as its width
and the square of its depth. If the strength of a beam one inch wide
and 12 inches deep is 400 pounds, find the strength of a beam two
inches wide and three inches deep.
- (a)
- 200 lbs.
- (b)
- 75 lbs.
- (c)
- 400 lbs.
- (d)
- 50 lbs.
- (e)
- none of these.
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