11th Class Physics Systems Of Particles & Rotational Motion / कणों के निकाय तथा घूर्णी गति Question Bank 11th CBSE Physics Rotational Motion

  • question_answer
    Why do we prefer to use a wrench with a long arm?

    Answer:

                    The turning effect of force, \[\overset{\to }{\mathop{\tau }}\,=\overset{\to }{\mathop{r}}\,\times \overset{\to }{\mathop{F}}\,\]. When arm of the wrench is long, r is larger. Therefore, smaller force (F) will produce the same turning effect.                


You need to login to perform this action.
You will be redirected in 3 sec spinner