A spring with a spring constant of 120 N/m with an uncompressed length of 36 meters is compressed with an applied force to give the spring and a 30 kg block on a frictionless surface that is attached to its potential energy of 24 KJ. The applied force is then removed allowing the spring to push the block on the frictionless surface. a) What is the compressed length of the spring? b) What is the velocity of the block when it leaves the spring on the frictionless surface? c) What applied force is now required to compress the spring to a compressed length of 15 meters?

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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.