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A force f acts on a particle whose positio.vector is r.what is torque about the origin

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Find the TORQUE of a force F(vector)...

Find the torque of a force F(vector) =3i+j+5k at a point r(vector)=7i+3j+k

a) 14i-38j+16k

b) 4i+4j+6k 

c) -21i+4j+4k

d) -14i+34j-16k 

5 months ago

Answers : (1)

Dear Ishika

 

Torque = r(vector) x F(vector)

Torque = (7i +3j +k) x (3i + j +5k)

Torque = 7k -35 j -9K +15 i + 3j -i

Torque = 14 i -32 j -2k

 

Options are WRONG according to the DATA in the question.

 



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