Question

A body is acted upon by two forces each of magnitude 50N.Find the magnitude of resultant force on the body when the angle between two forces is:(a)45degrees (b)135degrees

Answer 1

cos 45 = sin 45 = 0.707
50 (1 + 0.707) = 85.35 in x direction
50 (0.707) = 35.35 in y direction
magnitude = sqrt (85.35^2 + 35.35*2) = sqrt (7285 +1250) = 92.4

then for 135 = 180 - 45
it is 50 (1 - 0.707) x direction
same in y direction

I have no idea what "answered" did.

Answer 2

(a) 70.7 N
(b) 70.7 N