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Home Q & A Board Science-Related Homework Help Physics
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ididntstudy ididntstudy
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6 years ago
A 10-kg block on a rough horizontal surface is attached to a light spring (force constant = 1.4 kN/m). The block is pulled 8.0 cm to the right from its equilibrium position and released from rest. The frictional force between the block and surface has a magnitude of 30 N. What is the kinetic energy of the block as it passes through its equilibrium position?
 a. 4.5 J
  b. 2.1 J
  c. 6.9 J
  d. 6.6 J
  e. 4.9 J
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#1
6 years ago
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