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Question


Initially wedge was at rest and spring is in natural length. Now a solid sphere of same mass that of the wedge is attached to the spring and is released as shown in the figure. (assume sphere is in pure Rolling). The maximum extension in spring is:
75960.png

A
25meter
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B
35meter
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C
46meter
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D
2 meter
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Solution

The correct option is A 25meter
At max. extension linear momentum of system is zero and both ball and wedge will be at rest,

mgx35=12(3mg)x2

x=25m

282553_75960_ans.png

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