2. We apply Newton’s second law (Eq. 5-1 or, equivalently, Eq. 5-2). The net force applied on the chopping block is GGGFFFnet=+12, where the vector addition is done using unit-vector notation. The acceleration of the block is given by GGGaFFmdi/.(a) In the first case ()()()ˆˆˆˆ3.0N i4.0N j3.0N i4.0N j0ªºªº+=++−+−=¬¼¬¼GGsoGa=0.(b) In the second case, the acceleration
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