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Consider the wall of a dam to be straigh...

Consider the wall of a dam to be straight with height H and length L. It holds a lake of water of height h(h < H) on one side. Let the density of water be `rho_w`. Denote the torque about the axis along the bottom length of the wall by `T_1`. Denote also a similar torque due to the water up to height h/2 and wall length L/2 by `T_2`. Then `T_1`/`T_2` (ignore atmospheric pressure) is

A

2

B

4

C

8

D

16

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