There is a high pile of bricks on the ground. In which case is it necessary to apply a large horizontal force
| August 28, 2020 | Education
There is a high pile of bricks on the ground. In which case is it necessary to apply a large horizontal force: to pull out the fourth brick from the top while holding the rest, or to move the five top bricks while also holding the rest?
A lot of force must be applied to pull out the fourth brick, since the Fenian forces from the third and fifth bricks will act on it.
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