Nwomen, each of mass m, stand on a railway flatcar of mass m. they jump off one end of the flatcar with velocity u relative to the car. the car rolls in the opposite direction without friction. (a) what is the final velocity of the flatcar if all the women jump at the same time? (b) what is the final velocity of the flatcar if the women jump off one at a time? (c) which answer, either (a) or (b), is greater? try to make physical and/or intuitive sense of this answer and comment on your thoughts.
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Physics, 21.06.2019 22:40
The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively
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Physics, 22.06.2019 07:40
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Nwomen, each of mass m, stand on a railway flatcar of mass m. they jump off one end of the flatcar w...
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