How much work is done on the rescue by the force lifting

Reference no: EM13337407

A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. The lift is performed in three stages, each requiring a vertical distance of 14.0 m: (a) the initially stationary spelunker is accelerated to a speed of 3.40 m/s; (b) he is then lifted at the constant speed of 3.40 m/s; (c) finally he is decelerated to zero speed. How much work is done on the 79.0 kg rescue by the force lifting him during each stage?

Reference no: EM13337407

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