MCQOPTIONS
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| 1. |
The linear velocity of a rotating body is given by \[\overrightarrow{v}=\overrightarrow{\omega }\times \overrightarrow{r},\]where \[\overrightarrow{\omega }\] is the angular velocity and \[\overrightarrow{r}\] is the radius vector. The angular velocity of a body is \[\overrightarrow{\omega }=\hat{i}-2\hat{j}+2\hat{k}\] and the radius vector \[\overrightarrow{r}=4\hat{j}-3\hat{k},\] then \[|\overrightarrow{v}|\] is |
| A. | \[\sqrt{29}\]units |
| B. | \[\sqrt{31}\]units |
| C. | \[\sqrt{37}\]units |
| D. | \[\sqrt{41}\]units |
| Answer» B. \[\sqrt{31}\]units | |