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137_Dynamics 11ed Manual

137_Dynamics 11ed Manual - − ft s 2 = Problem 12-197 Two...

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Engineering Mechanics - Dynamics Chapter 12 v B s A v A s A 2 d 2 + = a B v A 2 s A a A + s A 2 d 2 + s A 2 v A 2 s A 2 d 2 + () 3 + = v B 1.2 ft s = a B 1.112 ft s 2 = * Problem 12-196 The roller at A is moving upward with a velocity v A and has an acceleration a A at s A . Determine the velocity and acceleration of block B at this instant. Given: s A 4f t = a A 4 ft s 2 = v A 3 ft s = d 3f t = Solution: ls B s A 2 d 2 + + = 0 v B s A v A s A 2 d 2 + + = v B s A v A s A 2 d 2 + = v B 2.4 ft s = a B v A 2 s A a A s A 2 d 2 + s A 2 v A 2 s A 2 d 2 + () 3 + = a B
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Unformatted text preview: − ft s 2 = Problem 12-197 Two planes, A and B , are flying at the same altitude. If their velocities are v A and v B such that the angle between their straight-line courses is θ , determine the velocity of plane B with respect to plane A. 135...
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