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It definitely takes energy to rotate a mass like that, which has to come from somewhere, which would come from the kinetic energy of the log/ acceleration due to gravity.

I'm not so sure about a horizontal component lessening the impact of the log, unless there is a mechanism by which the kinetic energy of the weight can get transferred into kinetic energy in a horizontal or rotational direction. Movement of a projectile is independent in the x,y, and z planes...

I've put several half-depth kerfs into a spar on my way down to make breaking points for the fell onto asphalt. We were just bucking into firewood rounds in place, so it was easy, and even partially split firewood.

Good shoot, Benn. Mick, not so much. F$#%ing bystanders. Sometimes a tough call. I stacked multiple layers, once. Came down and broke the top piece in the middle, flinging one end of the limb end over end like a baton, up and over the peak of the shed, dinging a tile on the far side of the...