A nucleus at rest disintegrates into two smaller nuclei with their masses in the ratio of 2:1. After disintegration they will move :-
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A nucleus at rest disintegrates into two smaller nuclei with their masses in the ratio of 2:1. After disintegration they will move :-

G1 Physics · Accepted Answer

By conservation of momentum: p(initial) = p(final) Initially, total momentum is zero. Therefore: m₁u₁ + m₂u₂ = 0 So: u₁/u₂ = -m₂/m₁ Given: m₁/m₂ = 2/1 Hence: u₁/u₂ = -1/2 The negative sign shows opposite directions. Therefore, the nuclei move in opposite directions with speed ratio 1 : 2.