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a) the displayed laptop has the following weight distribution:
m1=1100g (keyboard unit)
m2=900g (screen unit)
angle alpha=110 degrees
The user presses down the mousepad with a force F1 = 1 Newton.
question: How strong are the forces in points A and B , what is
the resulting total force and where is it located on the keyboard unit ?

b) a second laptop type has an inefficient weight distribution:
m1 = 900 g
m2 = 1100 g
question: For which angle alpha does the laptop fall to the right side ?
(F1 = 0 N in this case)
(this page has been updated on April-27-2006)