Each of the coil springs of a car has a spring constant of 25,000 N/m. How much is each spring compressed if it supports 1/4 of the car's 12,000 N weight?

Acave 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 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

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How would a small bar magnet be oriented when placed at position x?