Suppose a force of 30 N is required to stretch and hold a spring 0.2 m from its equilibrium position. a. Assuming the spring obeys Hooke’s law, find the spring constant k. b. How much work is required to compress the spring 0.4 m from its equilibrium position? c. How much work is required to stretch the spring 0.3 m from its equilibrium position? d. How much additional work is required to stretch the spring 0.2 m if it has already been stretched 0.2 m from its equilibrium position?

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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.