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shenwei1988
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A helicopter is used to lift a 72.7 kg astronaut 16.9 m vertically out of the ocean by means of a cable. The astronaut rises with constant upward acceleration of magnitude 7.23 m/s2 until she reaches the helicopter.
a) How much work is done by the helicopter on the astronaut?
W=1/2MV^2=FS
first try: V^2=2as W=mas=8882.9949J wrong
second try: F=mg W=mgh=12052.8603J wrong
someone help me please, thank you so much!
a) How much work is done by the helicopter on the astronaut?
W=1/2MV^2=FS
first try: V^2=2as W=mas=8882.9949J wrong
second try: F=mg W=mgh=12052.8603J wrong
someone help me please, thank you so much!