ch05_p61 71 - 61. The goal is to arrive at the least...

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61. The goal is to arrive at the least magnitude of & F net , and as long as the magnitudes of & F 2 and & F 3 are (in total) less than or equal to & F 1 then we should orient them opposite to the direction of & F 1 (which is the + x direction). (a) We orient both & & FF 23 and in the – x direction. Then, the magnitude of the net force is 50 – 30 – 20 = 0, resulting in zero acceleration for the tire. (b) We again orient & & and in the negative x direction. We obtain an acceleration along the + x axis with magnitude a FF F m = −− = = 123 2 50 083 N3 0 N1 0 N 12 kg m/s .. (c) In this case, the forces &
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This test prep was uploaded on 04/22/2008 for the course PHYSICS 1100 taught by Professor Grassers during the Spring '08 term at Rensselaer Polytechnic Institute.

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