7. The net force applied on the chopping block is GGGGFFFFnet=++123, where the vector addition is done using unit-vector notation. The acceleration of the block is given by GGGGaFFFm=++di/.(a) The forces exerted by the three astronauts can be expressed in unit-vector notation as follows: ()123ˆˆˆˆ(32 N) cos 30 isin 30(27.7 N)i(16 N)jjˆ(55 N) cos 0 isin 0(55 N)ijˆˆ(41 N) cos60 isin60(20.5 N)i(35.5 N)j.jFFF=°+°=++°==−°+−°=−GGGThe resultant acceleration of the asteroid of mass m= 120 kg is therefore
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.