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6.System of Particles and Rotational Motion
easy
$0.01\ kg $ દળનો કણનો સ્થાન સદિશ $\overline r \,\, = \,\,\,(10\hat i\,\,\, + \,\,\,6\hat j\,)$ મીટર છે અને તે $5\,\hat i\,\,m/s$ વેગથી ગતિ કરે છે તો તેનું ઊગમબિંદુ આસપાસ કોણીય વેગમાન ......... $\hat k\,\,J/\sec $ ગણો.
A
$ - 1.1$
B
$ - 3$
C
$0.7$
D
$ - 0.3$
Solution
$\,\overline {\text{p}} \,\, = \,\,m\overline v \,\, = \,\,\,0.01\,\, \times \,\,5\hat i\,\, = \,\,0.05\hat i$
$\, \Rightarrow \,\,\,\overline L \,\, = \,\,\overline r \,\, \times \,\,\overline p \,\, = \,\,\,(10\hat i\,\, + \,\,6\hat j)\,\, \times \,\,\,0.05\hat i\,\,\,$
$ = \,\,0.3\,\,( – \hat k)\,\, = \,\,\, – 0.3\,\hat k\,\,J/\sec $
Standard 11
Physics
