6) See Figure on the right, which of the followings may be true if -129. V = 63°

Question

6) See Figure on the right, which of the followings may be true if -129. V = 63° and F 400 lb (Check the all the values in details) (scratch raw 6) A) None of below B) F-400 (cos 129 i+cos129j+ cos63 k) lb C) F-400 (cos129 i-cos51 cos63 k) Ib D) F-400 (Cos51 i+ cos129 i+ cos63° k) lb ) Determine the coordinate direction angles of the resultant force in the above question. Which of the following is the correct answer? (scratch row 7 A) , . V C)a, . V = 45 0". 15 0°. 120° 91 0°. 150°,106" B) , . V D) , . V -240°, 60 0°, 105° 91 0°, 600°, 120

Explanation / Answer

The question is not readible. The force Fz is not at all readible.

However for Q6 we wont need any information from the digram and hence we can answer it.

The Force F makes an angle of 129 degrees with x axis and (180-129) degrees with y axis. It makes angle Y=63 degrees with z axis.

Thus the force will be given by

F =Fcos129i +Fcos51j+Fcos63 k

Hence option C

t). Not clear

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