Class/Course - Class XI

Subject - Physics

Chapter - Conservation of momentum and Collision


Attention Class XI standard Aspirants! Just Exam provide a platform to all students who want to make practice for various subject online. We prepare this platform on the base of CBSE. If you want to join our unlimited test series, then please write us at info@justexam.in about your class/course


Dear User, Kindly login/register to view answer & explanation of each question.
Click here to Login/Sign Up.
Q.1 For the system shown in Figure, the string is light and pulley is frictionless. The 4 kg block is given an upward velocity of 1 m/s.

The centre of mass of two blocks will [neglect the impulse duration]
  accelerate down with g/3.
  initially accelerate downwars with g and then after some time accelerate down with g/3.
  initially accelerate with $\vec{g}$ and then the acceleration is 0
  initially accelerate with $\vec{g}$ and then with accelerate with g/3.