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Torque on a bolt when pulling with  a force of 200 N directed perpendicular to a wrench of length 20 cm is 

Option: 1

10 Nm 


Option: 2

20Nm 


Option: 3

40Nm 


Option: 4

80Nm 


Answers (1)

best_answer

As we have learned 

Applications of Vectors -

\vec{M}=\vec{r}\times \vec{F}

- wherein

\vec{r} is  positio vector of P part M is moment of \vec{F} about O. Direction of \vec{M} is along the normal to the plane OPN.

 

 We know \vec M = \vec r \times \vec{F} \Rightarrow |\vec{M}|= |\vec r||\vec{F}||\sin \theta \vec{}|

here r = 0.2 m , F = 200 N , \theta = \pi /2

 \Rightarrow M = 0.2 \times 200\times 1 = 40 Nm

 

 

 

 

 

 

Posted by

Shailly goel

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