Unformatted text preview: up. What is m 1 expressed in terms of m i and m f if the rocket stops moving when all of the fuel is gone? Problem 2 A force ﬁeld has the form (in cylindrical coordinates): ~ F =k r ˆ φ, where k is a constant. (a) Calculate H ~ F · d ~ ‘ around a unit circle centered at the origin. (b) Based on the previous result, is the force ﬁeld conservative ? Why or why not? (c) Let W = k arctan ± y x ² . Calculate~ ∇ W ....
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 Spring '08
 Staff
 Physics, mechanics, Acceleration, Force, constant rate dm/dt

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