An elevator cable breaks when a 925 kg elevator is 26.5 m above the top of a huge spring (k = 6.00×10^4 N/m) at the bottom of the shaft. a. Calculate the work done by gravity on the elevator before it hits the spring. b. Calculate the speed of the elevator just before striking the spring. c. Calculate the amount the spring compresses (note that here work is done by both spring and gravity.)

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Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.