1.

Two particles of equal mass have initial velocities 2i ms" and 2jms. First particle has a constantacceleration (i ms2 while the acceleration of the second particle is always zero. The centre ofmass of the two particles moves in(A) Circle(B) Parabola(C) Ellipse(D) Straight line

Answer»

Vcm = m*2i +m*2j/(m+m) = i+j

and Acm = m(i+j) +m*0/2m = i/2+j/2

so, Scm = Ut + 1/2*(acm)t²

The is the equation of straight line motion

option D.



Discussion

No Comment Found

Related InterviewSolutions