Question

Two vectors are given as vector=2i+3j+5k and force F=3i-2j+4. Find out the torque acting on it.


please urgent ​

Answer 1

Answer:

Here r=  

i

^

−  

j

^

​

+  

k

^

 

and F=7  

i

^

+3  

j

^

​

−5k.

We shall use the determinant rule to find the torque τ=r×F

τ=  

∣

∣

∣

∣

∣

∣

∣

∣

​

 

i

^

 

1

7

​

 

j

^

​

 

−1

3

​

 

k

^

 

1

−5

​

 

∣

∣

∣

∣

∣

∣

∣

∣

​

 =(5−3)  

i

^

−(−5−7)  

j

^

​

+(3−(−7))  

k

^

 

or τ=2  

i

^

+12  

j

^

​

+10  

k

^

 

Step-by-step explanation: