The high domes of ancient buildings have structural value (besides beauty). It arises from pressure difference on the two faces due to curvature (as in soap bubbles). There is a dome of radius 5 m and uniform (but small) thickness. The ‘surface tension’ of its masonry structure is about 500 N/m. Treated as hemispherical, the maximum load the dome can support is nearest to
Text Solution
Verified by ExpertsThe correct answer is:
B
Clearly the surface tension force on
Hemisphere = F S = (2T). (2 π r) {2 layers are formed}.
⇒ F S = 2 × 500 
× 2 × 3.14 × 5m.
≈ 30,000 N ≈ 3000 kg.wt.
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