A particle moves along x-axis whose potential energy versus x-coordinate graph is shown in the given figure. At x = 0, the particle is released form rest. Two potential wells A and B are shown in the figure. Then,

Options

A. the particle will never reach the potential well B.
B. the particle will be trapped into the potential well A.
C. the maximum kinetic energy during motion of the particle is 4 J.
D. the maximum kinetic energy during motion of the particle is 6 J.

Answer

A, B, C

Explanation

Initial mechanical energy is 8 J. To reach B, the initial mechanical energy should be greater than 10 J.
So, particle will never reach the well B.
So, the particle will be trapped into the potential well A.
At point A, PE= 4 J.
`therefore` Loss of PE= Gain in KE= 8-4 = 4 J.
So, option (a), (b) and (c) are correct.