Force (5, 6, 7) N acts on a particle with position vector (2, 2, 1) m. The magnitude of phi torque on the particle will be ………. Nm.

Force (5, 6, 7) N acts on a particle with position vector (2, 2, 1) m.

1.	Force (5, 6, 7) N acts on a particle with position vector (2, 2, 1) m. The magnitude of phi torque on the particle will be ………. Nm.
Answer» `sqrt(13)` `sqrt(149)` `sqrt(61)` `sqrt(23)` Solution :`\|vectau\|=\|vecrxxvecF\|` `=\|(2,2,1)xx(5,6,7)\|` `=\|(2,2,1)xx(5,6,7)\|` `=\|hati(14-6)-HATJ(14-5)+hatk(12-10)\|` `=\|8hati-9hatj+2hatk\|` `=sqrt((8)^(2)+(-9)^(2)+(2)^(2))` `=sqrt(64+81+4)` `=sqrt(149)`