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A 1440-kg crate of cabbages is laid on a level, frictionless track at the end of a heavy spring. The spring is compressed a distance of 0.100 m by a force of 83500 N. When the spring is released, it propels the crate. the spring constant of the spring equals 835000 N/m.
What is the total amount of work done by the spring on the crate during the launch in J?

  • Physics -

    spring constant=835000/.1 in N/m

    KE at launch= PE in spring

    work done by spring= 1/2 k (.1)^2

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