A 700 lbm rocket is accelerated at a rate of 20 ft/s2. What total force is required in lbf
if: a) the rocket is moving horizontally and without friction, b) the rocket is moving
vertically upward in a location where g = 31 ft/s2.
a)
F1=ma=14 klbf,F_1=ma=14 ~klbf,F1=ma=14 klbf,
b)
F2=m(g+a)=35.7 klbf.F_2=m(g+a)=35.7~klbf.F2=m(g+a)=35.7 klbf.
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