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80. A man seeking to set a world record wants to tow a 109
000-kg airplane along a runway by pulling
horizontally on a cable attached to the airplane. The mass of the man
is 85 kg, and the coefficient of static friction between his shoes and the
runway is 0.77. What is the greatest acceleration the man can give the airplane?
Assume that the airplane is on wheels that turn without any frictional
resistance. |
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Since there is no motion
vertically. |
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We are looking for the
greatest static friction which means we are not
moving until the static friction is maxed out. So acceleration is
zero so that we can determine H which will then act on the plane giving it
the initial acceleration. |
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Now apply this force to the
109,000 kg plane and find the resulting acceleration |
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