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Home Q & A Board Science-Related Homework Help Physics
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life_skals life_skals
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6 years ago
A 25-kg block on a horizontal surface is attached to a light spring (force constant = 8.0 kN/m). The block is pulled 10 cm to the right from its equilibrium position and released from rest. When the block has moved 2.0 cm toward its equilibrium position, its kinetic energy is 12 J. What is the change in mechanical energy caused by the frictional force on the block as it moves the 2.0 cm?
 a. -4.0 J
  b. -3.5 J
  c. -2.4 J
  d. -2.9 J
  e. -15 J
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timmyisbaetimmyisbae
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6 years ago
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life_skals Author
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6 years ago
This helped my grade so much Perfect
kevin12323h
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Yesterday
Thank you, thank you, thank you!
oscar520000
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2 hours ago
Correct Slight Smile TY
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