2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-82

  • question_answer
    A uniform chain of length L and mass M is lying on a smooth table and 1/6 of its length is hanging drawn over the edge of table. If g is acceleration due to gravity, the work done to pull the hanging part on the table is

    A)  \[\frac{MgL}{72}\]                   

    B)  \[\frac{MgL}{18}\]

    C)  \[\frac{MgL}{6}\]                     

    D)  MgL

    Correct Answer: A

    Solution :

    Weight of chain to be lifted \[=\,\,\,\frac{Mg}{6}\] Height through which centre of gravity is raised \[=\,\,\,\frac{L}{12}\] \[\therefore \,\,\,Work\,\,done\,\,=\,\,\frac{Mg}{6}\times \frac{L}{12}=\,\,\frac{MgL}{72}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner