A force N is applied at the point m

PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A force

\vec{F}=(a,b,0)

N is applied at the point

P(1,2,0)

m. The force lies in the plane

x+2y=0

and produces a torque

\vec{\tau}=(0,0,9)

N m about the origin. What is the magnitude of the force? (a)

6.71\ \text{N}

(b)

4.60\ \text{N}

(c)

4.02\ \text{N}

(d)

5.03\ \text{N}