Question

2 forces 4N and F act at 120° with each other. If their resultant is at right angles to 4N, the value of F is ?​

Answer 1

Answer:

for two vector ? and a C R=240 La so 0 P tana- = OD R = pta makes angle with p from ACOD Qsino 10 sangle betuween PAQ Cogo B and so, 181=4N IF I=f and resultant is at right angles at to ao 0=120° x=90° tana= tan 98 = f sin (120° 4+f605490) fsin (120° &+fcosiro) tan go- it & tf cos120 = 0 4 = -fros120 1: cos (196-6)--come 4 --ft cos(180-60) --F (-60560) - £ 1": cous ( = 1 so = ON choice o ON correct.

Explanation: