A mass $$M,$$ attached to a horizontal spring, executes $$S.H.M.$$ with amplitude $${A_1}.$$ When the mass $$M$$ passes through its mean position then a smaller mass $$m$$ is placed over it and both of them move together with amplitude $${A_2}.$$ The ratio of $$\left( {{{{A_1}} \over {{A_2}}}} \right)$$ is :
- A$${{M + m} \over M}$$
- B$${\left( {{M \over {M + m}}} \right)^{{1 \over 2}}}$$
- C$${\left( {{{M + m} \over M}} \right)^{{1 \over 2}}}$$
- D$${M \over {M + m}}$$
✓ Correct answer: C
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