標題:
physics question
發問:
A rocket fires two engines simultaneously. One produces a thrust of 725 N directlyforward,while the other gives a 513N thrust at 32.4degrees above the forward direction. find the magnitude and direction(relative to the forward direction) of the resultant force that these engines exert on the rocket.Anybody... 顯示更多 A rocket fires two engines simultaneously. One produces a thrust of 725 N directly forward,while the other gives a 513N thrust at 32.4degrees above the forward direction. find the magnitude and direction(relative to the forward direction) of the resultant force that these engines exert on the rocket. Anybody clarify the concept for me? List the steps The ans is 1190N and 13.4degrees
最佳解答:
其他解答:
physics question
發問:
A rocket fires two engines simultaneously. One produces a thrust of 725 N directlyforward,while the other gives a 513N thrust at 32.4degrees above the forward direction. find the magnitude and direction(relative to the forward direction) of the resultant force that these engines exert on the rocket.Anybody... 顯示更多 A rocket fires two engines simultaneously. One produces a thrust of 725 N directly forward,while the other gives a 513N thrust at 32.4degrees above the forward direction. find the magnitude and direction(relative to the forward direction) of the resultant force that these engines exert on the rocket. Anybody clarify the concept for me? List the steps The ans is 1190N and 13.4degrees
最佳解答:
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Use vector addition. First draw out the vector triagnle. Then apply cosine formula, let F be the resultant force, F^2 = 725^2 + 513^2 - 2 x 725 x 513 x cos(180-32.4) N^2 hence, F = 1190 N Apply sine formula, let a be the angle at which F makes with the forward direction, sin(a)/513 = sin(180-32.4)/1190 solve for a gives a = 13.4 degrees.其他解答:
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