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Find the minimum height of the obstacle so, that the sphere can stay in equilibrium.

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Find the minimum height of the obstacle so, that the sphere can stay in equilibrium.
image
A. `R/(1+costheta)`
B. `R/(1+sintheta)`
C. `R(1-sintheta)`
D. `R(1-costheta)`
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Correct Answer - D
The sphere is on the verge of toppling when a line a action of weight passes through the edge.
`costheta=(R-h)/Rimplies h=R-Rcostheta`
image
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