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A helicopter lifts a 72 kg astronaut 15 m vertically from
Chapter , Problem 17(choose chapter or problem)
A helicopter lifts a 72 kg astronaut 15 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. How much work is done on the astronaut by (a) the force from the helicopter and (b) the gravitational force on her? Just before she reaches the helicopter, what are her (c) kinetic energy and (d) speed?
Questions & Answers
QUESTION:
A helicopter lifts a 72 kg astronaut 15 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. How much work is done on the astronaut by (a) the force from the helicopter and (b) the gravitational force on her? Just before she reaches the helicopter, what are her (c) kinetic energy and (d) speed?
ANSWER:Step 1 of 5 a) The force on the astronaut from the helicopter is. Given, Mass of the astronaut, The acceleration of the astronaut, So,