Magnitude

In Fig. 8-18, a 2.0 kg package of tamales slides along a floor with speed v1 – 4.0 m/s. It then runs into and compresses a spring, until the package momentarily stops. Its path to the initially relaxed spring is frictionless, but as it compresses the spring, a kinetic frictional force from the floor, of magnitude 15 N, acts on the package. If k – 10 000 N/m, by what distance d is the spring compressed when the package stops?

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Fig . 8-18 A package slides across a frictionless floor with velocity /1 toward a spring of spring constant k.When the package reaches the spring, a frictional force from the floor acts on the package.

 

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