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Question

The ratio of the accelerations for a solid sphere (mass 'm' and radius 'R') rolling down an incline of angle θ without slipping and slipping down the incline without rolling is: 

 


A
7 : 5
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B
5 : 7
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C
2 : 3
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D
2 : 5
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Solution

The correct option is B 5 : 7
Case - (I)
We know that,
a = g sin θ

Case - (II)
a=g sin θ1+K2R2           (hereK2R2=25)

aa=(1+K2R2) g sin θ
=11+25=175=57

Physics

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