1.

When a particle of mass m moves on the X-axis in a potential of the form V(x) = kx^(2), it performs simple harmonic motion. The corresponding time period is proportional to sqrt((m)/(k)), as can be seen easily using dimensional analysis. However, the motion of a particle can be periodic even when its potential energy increases on both sides of x = 0 in a way different from kx^(2) and its total energy is such that the particle does not escape to infinity. Consider a particle of mass m moving on the X-axis. Its potential energy is V(x)=a x^(2) (a gt 0) for |x| near the origin and becomes a constant equal to V_(0) for |x| ge X_(0) The acceleration of this particle for |X|>X_(0) is

Answer»

proportional to `(v_(0)/(mX_(0)))`
propotinal to `sqrt(V_(0))/(mX_(0))`
proportional to `V_(0)`
Zero

Solution :In this region `|x| GT X_(0)` POTENTIAL energy becomes
CONSTANT HENCE `F = -(dU)/(dx) = 0`
Hence is absence of force acceleration of the particle REMAINS zero.


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