ch05-p007 - 7. The net force applied on the chopping block...

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7. The net force applied on the chopping block is G G G G FF F F net =+ + 123 , where the vector addition is done using unit-vector notation. The acceleration of the block is given by G G G G aFFFm =++ di /. (a) The forces exerted by the three astronauts can be expressed in unit-vector notation as follows: () 1 2 3 ˆˆ ˆ ˆ (32 N) cos 30 i sin 30 (27.7 N)i (16 N)j j ˆ (55 N) cos 0 i sin 0 (55 N)i j ˆ ˆ (41 N) cos 60 i sin 60 (20.5 N)i (35.5 N)j. j F F F + ° = + + ° = =− ° + ° = G G G The 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.

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