InterviewSolution
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InterviewSolution
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The gravitational potential change uniformly from `-20 J//kg` to `-40J//kg` as one moves along `X`-axis from `x=-1m` to `x=+1m`. Mark the correct statement (s) about gravitational field intensity of origin.A. The gravitational field intensity at `x=0` must be equal to `10N//kg`.B. The gravitational field intensity at `x=0` may be equal to `10N//kg`.C. The gravitational field intensity at `x=0` may be greater than `10N//kg`.D. The gravitational field intensity at `x=0` must not be less than `10 N//kg`. |
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Answer» Correct Answer - B::C::D In a head on the collision between two particles, the kinetic energy becomes minimum and potential energy becomes maximum and potential energy becomes maximum at the instant when and energy are conserved at energy instant. Let `m` and `u` be the mass and initial velocity of the first particles, `2m` be the mass of second particle and `v` be the common velocity. then, `1/2m u^(2)=3J,m u=(m+2m)v` or `v=u/3` Minimum kinetic energy of system `1/2(3m)(u/3)^(2)=1J` maximum potential energy of system `2J` |
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