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An isolated particle of mass `m` is moving in horizontal plane` xy` along the `x`-axis, at a certain height above the ground. It suddenly explodes into two fragment of masses `m//4` and `3m//4`. An instant later, the smaller fragment is at `y=+15` cm. The larger fragment at this instant is atA. `-5 cm `B. `-20 cm `C. `+5cm `D. `(-45)/4cm` |
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Answer» Correct Answer - 1 The particle moving along x-axis, So, centre of mass will not move along y direction. `y_(cm)=0` `=(m_(1)y_(1)+m_(2)y_(2))/(m_(1)+m_(2)) =((m//4).15+(3m//4)y)/m` y=-5 cm |
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