  Common Misconceptions

## Systems Of Particles And Rotational Motion

- What you are getting from a statement might not be necessarily true. Let's burst some of the common misconceptions
1
Does an object have its centre of mass and geometrical centre at the same point in all possible cases?  2
Does an object have its centre of mass and centre of gravity at the same point in all possible cases?  3
Can Nature of Gravitational Force and Spring Force be Impulsive?
No, There two forces are always non-impulsive in nature. Impulsive force means, a force applied for a small-time interval, this types of force is responsible to give quick velocity to an object. In practical, Gravitational force always act on an object and spring forces act due to its compression so its effect can't be seen in small time intervals.
4
Can you balance impulsive force through constant force?  5
As we know, Moment of inertia is inertia for rotation body. Does It constant for a rotating object same like inertia of object?  6
Can parallel axis theorem apply for any type of object?
No, Parallel axis theorem is applicable for planar object like plate, Disc etc.
7
Can we define angular momentum for a particle moving in straight line?  