A man grows into a giant such that his linear dimensions increase by a factor of 9. Assuming that his density remains same, the stress in the leg will change by a factor of :
← JEE Main 2017 · 2 Apr · Shift 1
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JEE Main 2017 · 2 Apr · Shift 1, Physics question 1
Answer and worked solution
Official answer: A
Stress is weight over cross-section. Weight scales as (same density) and area as , so stress scales as : it grows by a factor of 9.