COM in Collision and Explosion
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Q.
Prove that Newtons second law of motion is the only real law of motion.
Q. A mass m moves in a circle on a smooth horizontal plane with velocity v0 at a radius R0. The mass is attached to a string which passes through a smooth hole in the plane as shown.
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/485133/original_264984.png)
The tension in the string is increased gradually and finally m moves in a
circle of radius R0/2. Then, the final value of the kinetic energy of particle is
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/485133/original_264984.png)
The tension in the string is increased gradually and finally m moves in a
circle of radius R0/2. Then, the final value of the kinetic energy of particle is
- 12mv02
- mv02
- 14mv02
- 2mv02