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(a) What is the resulting torque acting on the pebble about the origin?

( N·m) i hat + ( N·m) j hat + ( N·m) k hat

(b) What is the resulting torque acting on the pebble about a point with coordinates (0.0 m, 0.0 m, 5.0 m)?

( N·m) i hat + ( N·m) j hat + ( N·m) k hat

So all I could come up with was cross product was that torque = r cross F

Therefore T = fRsin[tex]\theta[/tex]

I looked up cross product on Wikipedia (not best site I know but w/e) and it came up with:

i x j = k

j x k = i

k x i = j

I tried those but it doesn't seem to be giving me the right answer. Any help please??

**3. The Attempt at a Solution**