Feb 05, 2010 16:08
My cat jumped up on my desk. My old PowerMac G4 was perched precariously there. The weight of the cat moved the center of weight of the cat-mac system to a position unsupported by the desk. This induced a torque, with the edge of the desk as fulcrum. Gravity accelerated both downward, but the cat dynamically changed its shape, propelling itself away from the mac, adding further torque to the mac. The mac made impact with the floor, coming to rest essentially coplanar with the floor, except that random protuberances from the floor (detritus from daily living) focused the force resulting from deceleration of the mac onto two small regions of the lid. The forces deformed the aluminum frame of the lid, causing protrusions of the lid onto the rear surface of the display device, in this case a backlit glass LCD screen. This screen has very low plasticity, resulting in brittle fracture.
I purchased a gently-used 1.67 GHz PowerBook G4 on eBay for $399.00. Relief is on the way. :-)