JEE Main 2022 Physics question
A mass 0.9 kg, attached a horizontal spring, executes SHM with an amplitude . When this mass passes through its mean position, then a smaller mass of 124 g is placed over it and both masses move together with amplitude . If the ratio is , then the value of will be .
Answer: 16
Solution
At the mean position the speed is . When the extra mass is placed, momentum is conserved in the horizontal direction: 0.9 $ =
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