Find the torque of a force 7hati + 3hatj – 5hatkabout the origin. The force acts on a particle whose position vector is hati – hatj + hatk.

Find the torque of a force 7hati + 3hatj – 5hatkabout the origin. Th

1.	Find the torque of a force 7hati + 3hatj – 5hatkabout the origin. The force acts on a particle whose position vector is hati – hatj + hatk.
Answer» Solution :Here `r=HATI-hatj+hatk` and `F=7hati+3hatj-5hatk` We SHALL use the determinant rule to FIND the torque `tau=rxxF` `tau=\|(hati,hatj,hatk),(1,-1,1),(7,3,-5)\|=(5-3)hati-(-5-7)hatj+(3-(-7))hatk` or `tau=2hati+12hatj+10hatk`