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Motion Of Bodies In Contact - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

Quick Facts

  • Motion of Block in Contact is considered one the most difficult concept.

  • 14 Questions around this concept.

Solve by difficulty

A block of mass m is connected to another block of mass  by a spring ( massless ) of spring constant  K . The blocks are kept on a smooth horizontal plane.Initially the blocks are at rest and the spring is unstretched   Then a constant force  starts acting on the block of mass  to pull it. Find the force of the block of mass  m.

 

Two bodies of masses 4 kg and 5 kg are acted upon by the same force. If the acceleration of a lighter body is 2 ms2, acceleration of a heavier body is:

Find the tension T2 for the system shown in fig:

Concepts Covered - 1

Motion of Block in Contact

 Use Fnet=maa=Fnetm1+m2

  1. When 2 Blocks are in Contact

            

     

 

Ff=m1af=m2aa=Fm1+m2f=m2Fm1+m2

  1. When 3 Blocks are in Contact

         

 Use Fnet=maa=Fm1+m2+m3f1=(m2+m3)Fm1+m2+m3f2=m3Fm1+m2+m3

 

 

 

 

 

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Motion of Block in Contact

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