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Laws of Motion question

2007 · Shift 0 · Q97
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  5. /2007 · Shift 0 · Q97

Laws of Motion question

2007 · Shift 0 · Q97

JEE MainPhysicsLaws of MotionMCQ+4 / −1
A block of mass mmm is connected to another block of massMmassMmassM by a spring (massless) of spring constant k.k.k. The block are kept on a smooth horizontal plane. Initially the blocks are at rest and the spring is unstretched. Then a constant force FFF starts acting on the block of mass MMM to pull it. Find the force of the block of mass m.m.m.
  1. A
    MF(m+M){{MF} \over {\left( {m + M} \right)}}(m+M)MF​
  2. B
    mFM{{mF} \over M}MmF​
  3. C
    (M+m)Fm{{\left( {M + m} \right)F} \over m}m(M+m)F​
  4. D
    mF(m+M){{mF} \over {\left( {m + M} \right)}}(m+M)mF​
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