An Ore Car of Mass 4 000 Kg Rolls Downhill

question 30

Multiple Choice

An ore car of mass 4 000 kg rolls downhill on tracks from a mine.At the end of the tracks,10.0 m lower in elevation,is a spring with k = 400 000 N/m.How much is the spring compressed in stopping the ore car? Ignore friction.

• A)0.14 m
• B)0.56 m
• C)1.40 m
• D)1.96 m

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