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Two forces FA and FB are applied to an object? - Printable Version +- Twitist Forums (http://twitist.com) +-- Forum: Facebook forums (/forum-14.html) +--- Forum: General facebook and life forums (/forum-25.html) +--- Thread: Two forces FA and FB are applied to an object? (/thread-150298.html) |
Two forces FA and FB are applied to an object? - Misunderstoodveil365 - 04-28-2014 07:05 PM Two forces FA and FB are applied to an object whose mass is 13.0 kg. The larger force is FA. When both forces point due east, the object's acceleration has a magnitude of 1.00 m/s2. However, when FA points due east and FB points due west, the acceleration is 0.500 m/s2, due east. Find the magnitude of FA and the magnitude of FB. - Mohammed - 04-28-2014 07:10 PM F = m*a 1) Fa + Fb = 13 Kg * 1.00 m/s2 = 13 2) Fa - Fb = 13 Kg * 0.500 m/s2 = 6.5 solving these two equations yields : Fa = 9.75 N Fb = 3.25 N - Steve4Physics - 04-28-2014 07:10 PM F=ma (FA+FB) = 13.0x 1.00 = 13.00 (FA-FB) = 13.0x 0.500 = 6.50 2FA = 13+6.50 = 19.50 FA = 9.75N FB = 13.00 - 9.75 = 3.25N - Oca - 04-28-2014 07:11 PM FA > FB, m = 13 kg 1) FA + FB = ma > FA + FB = (13 kg)(1 m/s2) = 13 N > FA = 13 N - FB 2) FA - FB = (13kg)(0.5 m/s2) > FA = FB + 6.5 N in 1) & 2) FA = 13N - FB = FB + 6.5 N > FB = 6.5N/2 = 3.25 N FA = 9.75N and FB = 3.25N <<<< ANSWER - Pegah Taheri - 04-28-2014 07:14 PM the same as the upper answers FA= 9.75 FB=3.25 - Johny - 04-28-2014 07:18 PM apples |