5√2
3 Answers
Asish Mahapatra
·May 12 '09 at 21:15
F1 = 30 i
F2 = -40 j
F3 = 50/√2 i + 50/√2 J
resultant force = (30+25√2) i + (25√2 - 40) j
= 65.35 i + 4.65 j
magnitude of resultant force = √65.352+4.652
~ 65.5
so acceleration = 65.5/10 = 6.55 m/s2