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JEE Main 2007
Exam
JEE Main
Year
2007
Subject
Physics
Chapter
Laws of Motion

JEE Main 2007 · Physics · Laws of Motion

A 2 ~kg block slides on a horizontal floor with a speed of 4 ~m / s...

A 2 kg2 \mathrm{~kg} block slides on a horizontal floor with a speed of 4 m/s4 \mathrm{~m} / \mathrm{s}. It strikes a uncompressed spring, and compresses it till the block is motionless. The kinetic friction force is 15 N15 \mathrm{~N} and spring constant is 10,000.N/m10,000 . \mathrm{N} / \mathrm{m}. The spring compresses by

Options

  1. A5.5 cm5.5 \mathrm{~cm}
  2. B2.5 cm2.5 \mathrm{~cm}
  3. C11.0 cm11.0 \mathrm{~cm}
  4. D8.5 cm8.5 \mathrm{~cm}

Correct answer

A. 5.5 cm5.5 \mathrm{~cm}

Step-by-step solution

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