Question

Find the torque of force F = 2i-i
-j acting at the point (-5,2,1)
about the origin
and find it's magnitude
​

Answer 1

answer:

τ=13.42Nm

Explanation:

F= √(2)² +(−1) 2+(−1) 2

F= √6N

Distance of the point (−5,2,1) from origin is given by

r=√ (−5−0)² +(2−0)²+(1−0)²

r= √30 m

Now torque is

τ=F×r

τ= √30×6

τ=13.42Nm